21132023122 has 24 divisors (see below), whose sum is σ = 38476411776. Its totient is φ = 8662816008.

The previous prime is 21132023093. The next prime is 21132023161. The reversal of 21132023122 is 22132023112.

It is a self number, because there is not a number n which added to its sum of digits gives 21132023122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4685418 + ... + 4689925.

It is an arithmetic number, because the mean of its divisors is an integer number (1603183824).

Almost surely, 2^21132023122 is an apocalyptic number.

21132023122 is a deficient number, since it is larger than the sum of its proper divisors (17344388654).

21132023122 is a wasteful number, since it uses less digits than its factorization.

21132023122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9375382 (or 9375375 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21132023122 its reverse (22132023112), we get a palindrome (43264046234).

The spelling of 21132023122 in words is "twenty-one billion, one hundred thirty-two million, twenty-three thousand, one hundred twenty-two".