121156252 has 24 divisors (see below), whose sum is σ = 242817120. Its totient is φ = 51816000.

The previous prime is 121156237. The next prime is 121156253. The reversal of 121156252 is 252651121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121156253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10002 + ... + 18502.

It is an arithmetic number, because the mean of its divisors is an integer number (10117380).

Almost surely, 2^121156252 is an apocalyptic number.

It is an amenable number.

121156252 is an abundant number, since it is smaller than the sum of its proper divisors (121660868).

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

121156252 is a wasteful number, since it uses less digits than its factorization.

121156252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021 (or 9019 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 121156252 is about 11007.1000722261. The cubic root of 121156252 is about 494.8215552420.

The spelling of 121156252 in words is "one hundred twenty-one million, one hundred fifty-six thousand, two hundred fifty-two".