21323012133000 has 64 divisors (see below), whose sum is σ = 66527797864320. Its totient is φ = 5686136568000.

The previous prime is 21323012132971. The next prime is 21323012133023. The reversal of 21323012133000 is 33121032312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3553832356 + ... + 3553838355.

It is an arithmetic number, because the mean of its divisors is an integer number (1039496841630).

Almost surely, 2^{21323012133000} is an apocalyptic number.

21323012133000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323012133000 is an abundant number, since it is smaller than the sum of its proper divisors (45204785731320).

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

21323012133000 is a wasteful number, since it uses less digits than its factorization.

21323012133000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7107670735 (or 7107670721 counting only the distinct ones).

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

Adding to 21323012133000 its reverse (33121032312), we get a palindrome (21356133165312).

The spelling of 21323012133000 in words is "twenty-one trillion, three hundred twenty-three billion, twelve million, one hundred thirty-three thousand".