121416172 has 12 divisors (see below), whose sum is σ = 221716656. Its totient is φ = 58068560.

The previous prime is 121416151. The next prime is 121416173. The reversal of 121416172 is 271614121.

It is not an unprimeable number, because it can be changed into a prime (121416173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659779 + ... + 659962.

It is an arithmetic number, because the mean of its divisors is an integer number (18476388).

Almost surely, 2^121416172 is an apocalyptic number.

It is an amenable number.

121416172 is a deficient number, since it is larger than the sum of its proper divisors (100300484).

121416172 is a wasteful number, since it uses less digits than its factorization.

121416172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319768 (or 1319766 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 121416172 is about 11018.9006711196. The cubic root of 121416172 is about 495.1751541494.

The spelling of 121416172 in words is "one hundred twenty-one million, four hundred sixteen thousand, one hundred seventy-two".