121155952 has 10 divisors (see below), whose sum is σ = 234739688. Its totient is φ = 60577968.

The previous prime is 121155949. The next prime is 121155953. The reversal of 121155952 is 259551121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121155953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3786108 + ... + 3786139.

Almost surely, 2^121155952 is an apocalyptic number.

It is an amenable number.

121155952 is a deficient number, since it is larger than the sum of its proper divisors (113583736).

121155952 is an equidigital number, since it uses as much as digits as its factorization.

121155952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7572255 (or 7572249 counting only the distinct ones).

The product of its digits is 4500, while the sum is 31.

The square root of 121155952 is about 11007.0864446501. The cubic root of 121155952 is about 494.8211468256.

The spelling of 121155952 in words is "one hundred twenty-one million, one hundred fifty-five thousand, nine hundred fifty-two".