The Number

121821

One Hundred and Twenty-One Thousand Eight Hundred and Twenty-One

In Base 18 Octodecimal Is

12fhf18

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

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

Nearby Numbers

Positive, nonzero integers within three units

121818
12fhc18
One Hundred and Twenty-One Thousand Eight Hundred and Eightteen in Base 18 Octodecimal
121819
12fhd18
One Hundred and Twenty-One Thousand Eight Hundred and Nineteen in Base 18 Octodecimal
121820
12fhe18
One Hundred and Twenty-One Thousand Eight Hundred and Twenty in Base 18 Octodecimal
121822
12fhg18
One Hundred and Twenty-One Thousand Eight Hundred and Twenty-Two in Base 18 Octodecimal
121823
12fhh18
One Hundred and Twenty-One Thousand Eight Hundred and Twenty-Three in Base 18 Octodecimal
121824
12g0018
One Hundred and Twenty-One Thousand Eight Hundred and Twenty-Four in Base 18 Octodecimal

Scientific Notation

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

1.21821e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0000f93a4f9e8d6df18

The reciprocal of 121821 in Base 18 Octodecimal.

Palindrome?

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

The number 12fhf18 is not a palindrome.

Not A Prime Number

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

One hundred and twenty-one thousand eight hundred and twenty-one 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.

One hundred and twenty-one thousand eight hundred and twenty-one 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 one hundred and twenty-one thousand eight hundred and twenty-one has the following 3 prime factors:

3
318
Three in Base 18 Octodecimal
7
718
Seven in Base 18 Octodecimal
5801
hg518
Five Thousand Eight Hundred and One in Base 18 Octodecimal

Prime Factorization

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

3181 · 7181 · hg5181 = 12fhf18

Base Conversions

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