The Number

21021

Twenty-One Thousand and Twenty-One

In Base 13 Tridecimal Is

975013

The numbers with a 13 subscript use Base 13 Tridecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

21018
974a13
Twenty-One Thousand and Eightteen in Base 13 Tridecimal
21019
974b13
Twenty-One Thousand and Nineteen in Base 13 Tridecimal
21020
974c13
Twenty-One Thousand and Twenty in Base 13 Tridecimal
21022
975113
Twenty-One Thousand and Twenty-Two in Base 13 Tridecimal
21023
975213
Twenty-One Thousand and Twenty-Three in Base 13 Tridecimal
21024
975313
Twenty-One Thousand and Twenty-Four in Base 13 Tridecimal

Scientific Notation

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

2.1021e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0001488068c576c12713

The reciprocal of 21021 in Base 13 Tridecimal.

Palindrome?

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

The number 975013 is not a palindrome.

Not A Prime Number

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

Twenty-one thousand and twenty-one is a composite number with 24 total factors (including 1 and itself).   See primes in Base 13 Tridecimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand and twenty-one is a composite number with 24 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 twenty-one thousand and twenty-one has the following 4 prime factors:

3
313
Three in Base 13 Tridecimal
7
713
Seven in Base 13 Tridecimal
11
b13
Eleven in Base 13 Tridecimal
13
1013
Thirteen in Base 13 Tridecimal

Prime Factorization

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

3131 · 7132 · b131 · 10131 = 975013

Base Conversions

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