21321230331000 has 128 divisors (see below), whose sum is σ = 68816109211200. Its totient is φ = 5489604108800.

The previous prime is 21321230330921. The next prime is 21321230331013. The reversal of 21321230331000 is 13303212312.

It is a super-2 number, since 2×21321230331000² (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 31 ways as a sum of consecutive naturals, for example, 122448807 + ... + 122622806.

Almost surely, 2^{21321230331000} is an apocalyptic number.

21321230331000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21321230331000 is an abundant number, since it is smaller than the sum of its proper divisors (47494878880200).

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

21321230331000 is a wasteful number, since it uses less digits than its factorization.

21321230331000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245071666 (or 245071652 counting only the distinct ones).

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

Adding to 21321230331000 its reverse (13303212312), we get a palindrome (21334533543312).

The spelling of 21321230331000 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred thirty million, three hundred thirty-one thousand".