The Number

221986

Two Hundred and Twenty-One Thousand Nine Hundred and Eighty-Six

In Base 18 Octodecimal Is

2212a18

The numbers with a 18 subscript use Base 18 Octodecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

221983
2212718
Two Hundred and Twenty-One Thousand Nine Hundred and Eighty-Three in Base 18 Octodecimal
221984
2212818
Two Hundred and Twenty-One Thousand Nine Hundred and Eighty-Four in Base 18 Octodecimal
221985
2212918
Two Hundred and Twenty-One Thousand Nine Hundred and Eighty-Five in Base 18 Octodecimal
221987
2212b18
Two Hundred and Twenty-One Thousand Nine Hundred and Eighty-Seven in Base 18 Octodecimal
221988
2212c18
Two Hundred and Twenty-One Thousand Nine Hundred and Eighty-Eight in Base 18 Octodecimal
221989
2212d18
Two Hundred and Twenty-One Thousand Nine Hundred and Eighty-Nine in Base 18 Octodecimal

Scientific Notation

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

2.21986e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0000893gac07g8hbg18

The reciprocal of 221986 in Base 18 Octodecimal.

Palindrome?

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

The number 2212a18 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 nine hundred and eighty-six is a composite number with 8 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

Two hundred and twenty-one thousand nine hundred and eighty-six is a composite number with 8 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 nine hundred and eighty-six has the following 3 prime factors:

2
218
Two in Base 18 Octodecimal
17
h18
Seventeen in Base 18 Octodecimal
6529
122d18
Six Thousand Five Hundred and Twenty-Nine in Base 18 Octodecimal

Prime Factorization

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

2181 · h181 · 122d181 = 2212a18

Base Conversions

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