121979922 has 16 divisors (see below), whose sum is σ = 246376512. Its totient is φ = 40257200.

The previous prime is 121979911. The next prime is 121979939. The reversal of 121979922 is 229979121.

It is a super-2 number, since 2×121979922² = 29758202742252168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100038 + ... + 101249.

It is an arithmetic number, because the mean of its divisors is an integer number (15398532).

Almost surely, 2^121979922 is an apocalyptic number.

121979922 is an abundant number, since it is smaller than the sum of its proper divisors (124396590).

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

121979922 is a wasteful number, since it uses less digits than its factorization.

121979922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201393.

The product of its digits is 40824, while the sum is 42.

The square root of 121979922 is about 11044.4520914349. The cubic root of 121979922 is about 495.9403571407.

The spelling of 121979922 in words is "one hundred twenty-one million, nine hundred seventy-nine thousand, nine hundred twenty-two".