21123102122032 has 80 divisors (see below), whose sum is σ = 41605467704640. Its totient is φ = 10386968883200.

The previous prime is 21123102122027. The next prime is 21123102122047. The reversal of 21123102122032 is 23022120132112.

It is a junction number, because it is equal to n+sod(n) for n = 21123102121994 and 21123102122012.

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, 1167722844 + ... + 1167740932.

It is an arithmetic number, because the mean of its divisors is an integer number (520068346308).

Almost surely, 2^{21123102122032} is an apocalyptic number.

It is an amenable number.

21123102122032 is a deficient number, since it is larger than the sum of its proper divisors (20482365582608).

21123102122032 is a wasteful number, since it uses less digits than its factorization.

21123102122032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20662 (or 20656 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21123102122032 its reverse (23022120132112), we get a palindrome (44145222254144).

The spelling of 21123102122032 in words is "twenty-one trillion, one hundred twenty-three billion, one hundred two million, one hundred twenty-two thousand, thirty-two".