121161172 has 36 divisors (see below), whose sum is σ = 234612000. Its totient is φ = 54706960.

The previous prime is 121161163. The next prime is 121161181. The reversal of 121161172 is 271161121.

It is an interprime number because it is at equal distance from previous prime (121161163) and next prime (121161181).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80079 + ... + 81577.

It is an arithmetic number, because the mean of its divisors is an integer number (6517000).

Almost surely, 2^121161172 is an apocalyptic number.

It is an amenable number.

121161172 is a deficient number, since it is larger than the sum of its proper divisors (113450828).

121161172 is a wasteful number, since it uses less digits than its factorization.

121161172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692 (or 1679 counting only the distinct ones).

The product of its digits is 168, while the sum is 22.

The square root of 121161172 is about 11007.3235620654. The cubic root of 121161172 is about 494.8282531743.

The spelling of 121161172 in words is "one hundred twenty-one million, one hundred sixty-one thousand, one hundred seventy-two".