The Number

121561

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

Nearby Numbers

Positive, nonzero integers within three units

121558
One Hundred and Twenty-One Thousand Five Hundred and Fifty-Eight
121559
One Hundred and Twenty-One Thousand Five Hundred and Fifty-Nine
121560
One Hundred and Twenty-One Thousand Five Hundred and Sixty
121562
One Hundred and Twenty-One Thousand Five Hundred and Sixty-Two
121563
One Hundred and Twenty-One Thousand Five Hundred and Sixty-Three
121564
One Hundred and Twenty-One Thousand Five Hundred and Sixty-Four

Scientific Notation

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

1.21561e5

Reciprocal

A number multiplied with its reciprocal is one.

0.000008226322587013927

The reciprocal of 121561.

Palindrome?

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

The number 121561 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 five hundred and sixty-one is a composite number with 8 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

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

11
Eleven
43
Forty-Three
257
Two Hundred and Fifty-Seven

Prime Factorization

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

111 · 431 · 2571 = 121561

Base Conversions

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