The Number

121

One Hundred and Twenty-One

In Base 11 Undecimal Is

10011

The numbers with a 11 subscript use Base 11 Undecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

118
a811
One Hundred and Eightteen in Base 11 Undecimal
119
a911
One Hundred and Nineteen in Base 11 Undecimal
120
aa11
One Hundred and Twenty in Base 11 Undecimal
122
10111
One Hundred and Twenty-Two in Base 11 Undecimal
123
10211
One Hundred and Twenty-Three in Base 11 Undecimal
124
10311
One Hundred and Twenty-Four in Base 11 Undecimal

Scientific Notation

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

1.21e2

Reciprocal

A number multiplied with its reciprocal is one.

0.0111

The reciprocal of 121 in Base 11 Undecimal.

Palindrome?

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

The number 10011 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 is a composite number with 3 total factors (including 1 and itself).   See primes in Base 11 Undecimal

A Composite

Composites have more than just these two factors.

One hundred and twenty-one is a composite number with 3 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 has the following 1 prime factor:

11
1011
Eleven in Base 11 Undecimal

Prime Factorization

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

10112 = 10011

Base Conversions

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