The Number

1221

One Thousand Two Hundred and Twenty-One

In Base 31 Untrigesimal Is

18c31

The numbers with a 31 subscript use Base 31 Untrigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

1218
18931
One Thousand Two Hundred and Eightteen in Base 31 Untrigesimal
1219
18a31
One Thousand Two Hundred and Nineteen in Base 31 Untrigesimal
1220
18b31
One Thousand Two Hundred and Twenty in Base 31 Untrigesimal
1222
18d31
One Thousand Two Hundred and Twenty-Two in Base 31 Untrigesimal
1223
18e31
One Thousand Two Hundred and Twenty-Three in Base 31 Untrigesimal
1224
18f31
One Thousand Two Hundred and Twenty-Four in Base 31 Untrigesimal

Scientific Notation

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

1.221e3

Reciprocal

A number multiplied with its reciprocal is one.

0.00ocb97f5kfta31

The reciprocal of 1221 in Base 31 Untrigesimal.

Palindrome?

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

The number 18c31 is not a palindrome.

Not A Prime Number

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

One thousand two hundred and twenty-one is a composite number with 8 total factors (including 1 and itself).   See primes in Base 31 Untrigesimal

A Composite

Composites have more than just these two factors.

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

3
331
Three in Base 31 Untrigesimal
11
b31
Eleven in Base 31 Untrigesimal
37
1631
Thirty-Seven in Base 31 Untrigesimal

Prime Factorization

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

3311 · b311 · 16311 = 18c31

Base Conversions

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