121129612 has 12 divisors (see below), whose sum is σ = 212107840. Its totient is φ = 60527376.

The previous prime is 121129553. The next prime is 121129627. The reversal of 121129612 is 216921121.

It is a happy 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, 1308 + ... + 15619.

Almost surely, 2^121129612 is an apocalyptic number.

It is an amenable number.

121129612 is a deficient number, since it is larger than the sum of its proper divisors (90978228).

121129612 is a wasteful number, since it uses less digits than its factorization.

121129612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18720 (or 18718 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

The square root of 121129612 is about 11005.8898776973. The cubic root of 121129612 is about 494.7852852400.

The spelling of 121129612 in words is "one hundred twenty-one million, one hundred twenty-nine thousand, six hundred twelve".