The Number

221865

Two Hundred and Twenty-One Thousand Eight Hundred and Sixty-Five

In Base 21 Unovigesimal Is

12k2021

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See Two Hundred and Twenty-One Thousand Eight Hundred and Sixty-Five in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

221862
12k1i21
Two Hundred and Twenty-One Thousand Eight Hundred and Sixty-Two in Base 21 Unovigesimal
221863
12k1j21
Two Hundred and Twenty-One Thousand Eight Hundred and Sixty-Three in Base 21 Unovigesimal
221864
12k1k21
Two Hundred and Twenty-One Thousand Eight Hundred and Sixty-Four in Base 21 Unovigesimal
221866
12k2121
Two Hundred and Twenty-One Thousand Eight Hundred and Sixty-Six in Base 21 Unovigesimal
221867
12k2221
Two Hundred and Twenty-One Thousand Eight Hundred and Sixty-Seven in Base 21 Unovigesimal
221868
12k2321
Two Hundred and Twenty-One Thousand Eight Hundred and Sixty-Eight in Base 21 Unovigesimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

2.21865e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0000i8bjj1fkdb221

The reciprocal of 221865 in Base 21 Unovigesimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 12k2021 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Two hundred and twenty-one thousand eight hundred and sixty-five is a composite number with 16 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Two hundred and twenty-one thousand eight hundred and sixty-five is a composite number with 16 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number two hundred and twenty-one thousand eight hundred and sixty-five has the following 4 prime factors:

3
321
Three in Base 21 Unovigesimal
5
521
Five in Base 21 Unovigesimal
7
721
Seven in Base 21 Unovigesimal
2113
4gd21
Two Thousand One Hundred and Thirteen in Base 21 Unovigesimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

3211 · 5211 · 7211 · 4gd211 = 12k2021

Base Conversions

The number two hundred and twenty-one thousand eight hundred and sixty-five in 35 different bases