121155412 has 12 divisors (see below), whose sum is σ = 242310880. Its totient is φ = 51923736.

The previous prime is 121155407. The next prime is 121155431. The reversal of 121155412 is 214551121.

121155412 is an admirable number.

It is a congruent number.

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, 2163462 + ... + 2163517.

Almost surely, 2^121155412 is an apocalyptic number.

It is an amenable number.

121155412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121155412 is a wasteful number, since it uses less digits than its factorization.

121155412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4326990 (or 4326988 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 121155412 is about 11007.0619149708. The cubic root of 121155412 is about 494.8204116745.

The spelling of 121155412 in words is "one hundred twenty-one million, one hundred fifty-five thousand, four hundred twelve".