Nearby Numbers

Positive, nonzero integers within three units

21008

Twenty-One Thousand and Eight

21009

Twenty-One Thousand and Nine

21010

Twenty-One Thousand and Ten

21012

Twenty-One Thousand and Twelve

21013

Twenty-One Thousand and Thirteen

21014

Twenty-One Thousand and Fourteen

Scientific Notation

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

2.1011e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000047594117367093426

The reciprocal of 21011.

Palindrome?

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

The number 21011 is not a palindrome.

A Prime Number

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

Twenty-one thousand and eleven is the 2362nd prime number.   See primes in Base 10 Decimal

Not A Composite

Composites have more than just these two factors.

Twenty-One Thousand and Eleven is not a composite number because it has exactly two factors: One and Twenty-One Thousand and Eleven

Prime Factors

21011

Twenty-One Thousand and Eleven

Prime Factorization

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

210111 = 21011

Base Conversions

The number twenty-one thousand and eleven in 35 different bases