The Number

221

Two Hundred and Twenty-One

In Base 20 Vigesimal Is

b120

The numbers with a 20 subscript use Base 20 Vigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

218
ai20
Two Hundred and Eightteen in Base 20 Vigesimal
219
aj20
Two Hundred and Nineteen in Base 20 Vigesimal
220
b020
Two Hundred and Twenty in Base 20 Vigesimal
222
b220
Two Hundred and Twenty-Two in Base 20 Vigesimal
223
b320
Two Hundred and Twenty-Three in Base 20 Vigesimal
224
b420
Two Hundred and Twenty-Four in Base 20 Vigesimal

Scientific Notation

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

2.21e2

Reciprocal

A number multiplied with its reciprocal is one.

0.01g3jcf418j3e520

The reciprocal of 221 in Base 20 Vigesimal.

Palindrome?

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

The number b120 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 is a composite number with 4 total factors (including 1 and itself).   See primes in Base 20 Vigesimal

A Composite

Composites have more than just these two factors.

Two hundred and twenty-one is a composite number with 4 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 has the following 2 prime factors:

13
d20
Thirteen in Base 20 Vigesimal
17
h20
Seventeen in Base 20 Vigesimal

Prime Factorization

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

d201 · h201 = b120

Base Conversions

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