21231254001300 has 72 divisors (see below), whose sum is σ = 70204679904576. Its totient is φ = 4852858056960.

The previous prime is 21231254001283. The next prime is 21231254001317. The reversal of 21231254001300 is 310045213212.

It is an interprime number because it is at equal distance from previous prime (21231254001283) and next prime (21231254001317).

It is a super-2 number, since 2×21231254001300² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5055058377 + ... + 5055062576.

Almost surely, 2^{21231254001300} is an apocalyptic number.

21231254001300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21231254001300 is an abundant number, since it is smaller than the sum of its proper divisors (48973425903276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21231254001300 is a wasteful number, since it uses less digits than its factorization.

21231254001300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10110120977 (or 10110120970 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21231254001300 its reverse (310045213212), we get a palindrome (21541299214512).

The spelling of 21231254001300 in words is "twenty-one trillion, two hundred thirty-one billion, two hundred fifty-four million, one thousand, three hundred".