121180916 has 6 divisors (see below), whose sum is σ = 212066610. Its totient is φ = 60590456.

The previous prime is 121180909. The next prime is 121180933. The reversal of 121180916 is 619081121.

It can be written as a sum of positive squares in only one way, i.e., 103958416 + 17222500 = 10196^2 + 4150^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15147611 + ... + 15147618.

It is an arithmetic number, because the mean of its divisors is an integer number (35344435).

Almost surely, 2^121180916 is an apocalyptic number.

It is an amenable number.

121180916 is a deficient number, since it is larger than the sum of its proper divisors (90885694).

121180916 is a wasteful number, since it uses less digits than its factorization.

121180916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30295233 (or 30295231 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 29.

The square root of 121180916 is about 11008.2203829684. The cubic root of 121180916 is about 494.8551302071.

The spelling of 121180916 in words is "one hundred twenty-one million, one hundred eighty thousand, nine hundred sixteen".