121775232 has 32 divisors (see below), whose sum is σ = 323466480. Its totient is φ = 40591616.

The previous prime is 121775191. The next prime is 121775243. The reversal of 121775232 is 232577121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 121775232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158178 + ... + 158945.

Almost surely, 2^121775232 is an apocalyptic number.

121775232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121775232 is an abundant number, since it is smaller than the sum of its proper divisors (201691248).

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

121775232 is an equidigital number, since it uses as much as digits as its factorization.

121775232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317140 (or 317128 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 121775232 is about 11035.1815571834. The cubic root of 121775232 is about 495.6627954313.

The spelling of 121775232 in words is "one hundred twenty-one million, seven hundred seventy-five thousand, two hundred thirty-two".