21132403112 has 64 divisors (see below), whose sum is σ = 42293664000. Its totient is φ = 9864426496.

The previous prime is 21132403109. The next prime is 21132403207. The reversal of 21132403112 is 21130423112.

It is a super-2 number, since 2×21132403112² (a number of 21 digits) contains 22 as substring.

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, 19054814 + ... + 19055922.

It is an arithmetic number, because the mean of its divisors is an integer number (660838500).

Almost surely, 2^21132403112 is an apocalyptic number.

It is an amenable number.

21132403112 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

21132403112 is a wasteful number, since it uses less digits than its factorization.

21132403112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138 (or 2134 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21132403112 its reverse (21130423112), we get a palindrome (42262826224).

The spelling of 21132403112 in words is "twenty-one billion, one hundred thirty-two million, four hundred three thousand, one hundred twelve".