21313013331132 has 120 divisors (see below), whose sum is σ = 55894049597232. Its totient is φ = 7081696512000.

The previous prime is 21313013331107. The next prime is 21313013331157. The reversal of 21313013331132 is 23113331031312.

21313013331132 is a `hidden beast` number, since 2 + 1 + 313 + 0 + 1 + 3 + 3 + 311 + 32 = 666.

It is an interprime number because it is at equal distance from previous prime (21313013331107) and next prime (21313013331157).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21313013331096 and 21313013331105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 847322268 + ... + 847347420.

Almost surely, 2^{21313013331132} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21313013331132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27947024798616).

21313013331132 is an abundant number, since it is smaller than the sum of its proper divisors (34581036266100).

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

21313013331132 is a wasteful number, since it uses less digits than its factorization.

21313013331132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33401 (or 33390 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

Adding to 21313013331132 its reverse (23113331031312), we get a palindrome (44426344362444).

The spelling of 21313013331132 in words is "twenty-one trillion, three hundred thirteen billion, thirteen million, three hundred thirty-one thousand, one hundred thirty-two".