121922538 has 32 divisors (see below), whose sum is σ = 258971904. Its totient is φ = 38134272.

The previous prime is 121922531. The next prime is 121922543. The reversal of 121922538 is 835229121.

It is a happy number.

It is a super-2 number, since 2×121922538² = 29730210544722888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121922499 and 121922508.

It is not an unprimeable number, because it can be changed into a prime (121922531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35806 + ... + 39062.

It is an arithmetic number, because the mean of its divisors is an integer number (8092872).

Almost surely, 2^121922538 is an apocalyptic number.

121922538 is an abundant number, since it is smaller than the sum of its proper divisors (137049366).

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

121922538 is a wasteful number, since it uses less digits than its factorization.

121922538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646.

The product of its digits is 8640, while the sum is 33.

The square root of 121922538 is about 11041.8539204248. The cubic root of 121922538 is about 495.8625751995.

The spelling of 121922538 in words is "one hundred twenty-one million, nine hundred twenty-two thousand, five hundred thirty-eight".