13121922142 has 32 divisors (see below), whose sum is σ = 23508647424. Its totient is φ = 5370948000.

The previous prime is 13121922131. The next prime is 13121922157. The reversal of 13121922142 is 24122912131.

It is a self number, because there is not a number n which added to its sum of digits gives 13121922142.

It is a congruent number.

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, 182017 + ... + 243667.

It is an arithmetic number, because the mean of its divisors is an integer number (734645232).

Almost surely, 2^13121922142 is an apocalyptic number.

13121922142 is a deficient number, since it is larger than the sum of its proper divisors (10386725282).

13121922142 is a wasteful number, since it uses less digits than its factorization.

13121922142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62344.

The product of its digits is 1728, while the sum is 28.

The spelling of 13121922142 in words is "thirteen billion, one hundred twenty-one million, nine hundred twenty-two thousand, one hundred forty-two".