21132313002320 has 160 divisors (see below), whose sum is σ = 53267080688640. Its totient is φ = 7750380718080.

The previous prime is 21132313002319. The next prime is 21132313002343. The reversal of 21132313002320 is 2320031323112.

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, 521006201 + ... + 521046759.

It is an arithmetic number, because the mean of its divisors is an integer number (332919254304).

Almost surely, 2^{21132313002320} is an apocalyptic number.

21132313002320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21132313002320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26633540344320).

21132313002320 is an abundant number, since it is smaller than the sum of its proper divisors (32134767686320).

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

21132313002320 is a wasteful number, since it uses less digits than its factorization.

21132313002320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43933 (or 43927 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21132313002320 its reverse (2320031323112), we get a palindrome (23452344325432).

The spelling of 21132313002320 in words is "twenty-one trillion, one hundred thirty-two billion, three hundred thirteen million, two thousand, three hundred twenty".