21230331021300 has 72 divisors (see below), whose sum is σ = 61608698971456. Its totient is φ = 5644622108160.

The previous prime is 21230331021283. The next prime is 21230331021323. The reversal of 21230331021300 is 312013303212.

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, 104895592 + ... + 105097791.

Almost surely, 2^{21230331021300} is an apocalyptic number.

21230331021300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21230331021300 is an abundant number, since it is smaller than the sum of its proper divisors (40378367950156).

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

21230331021300 is a wasteful number, since it uses less digits than its factorization.

21230331021300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209993737 (or 209993730 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21230331021300 its reverse (312013303212), we get a palindrome (21542344324512).

The spelling of 21230331021300 in words is "twenty-one trillion, two hundred thirty billion, three hundred thirty-one million, twenty-one thousand, three hundred".