The Number

221221

Two Hundred and Twenty-One Thousand Two Hundred and Twenty-One

In Base 21 Unovigesimal Is

12id721

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

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

Nearby Numbers

Positive, nonzero integers within three units

221218
12id421
Two Hundred and Twenty-One Thousand Two Hundred and Eightteen in Base 21 Unovigesimal
221219
12id521
Two Hundred and Twenty-One Thousand Two Hundred and Nineteen in Base 21 Unovigesimal
221220
12id621
Two Hundred and Twenty-One Thousand Two Hundred and Twenty in Base 21 Unovigesimal
221222
12id821
Two Hundred and Twenty-One Thousand Two Hundred and Twenty-Two in Base 21 Unovigesimal
221223
12id921
Two Hundred and Twenty-One Thousand Two Hundred and Twenty-Three in Base 21 Unovigesimal
221224
12ida21
Two Hundred and Twenty-One Thousand Two Hundred and Twenty-Four in Base 21 Unovigesimal

Scientific Notation

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

2.21221e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0000i9ec3j82a81f21

The reciprocal of 221221 in Base 21 Unovigesimal.

Palindrome?

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

The number 12id721 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 two hundred and twenty-one is a composite number with 24 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 two hundred and twenty-one is a composite number with 24 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 two hundred and twenty-one has the following 4 prime factors:

7
721
Seven in Base 21 Unovigesimal
11
b21
Eleven in Base 21 Unovigesimal
13
d21
Thirteen in Base 21 Unovigesimal
17
h21
Seventeen in Base 21 Unovigesimal

Prime Factorization

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

7211 · b211 · d212 · h211 = 12id721

Base Conversions

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