121916120 has 32 divisors (see below), whose sum is σ = 280152000. Its totient is φ = 47728128.

The previous prime is 121916111. The next prime is 121916143. The reversal of 121916120 is 21619121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30545 + ... + 34304.

It is an arithmetic number, because the mean of its divisors is an integer number (8754750).

Almost surely, 2^121916120 is an apocalyptic number.

121916120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121916120 is an abundant number, since it is smaller than the sum of its proper divisors (158235880).

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

121916120 is a wasteful number, since it uses less digits than its factorization.

121916120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64907 (or 64903 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 121916120 is about 11041.5632951136. The cubic root of 121916120 is about 495.8538743148.

The spelling of 121916120 in words is "one hundred twenty-one million, nine hundred sixteen thousand, one hundred twenty".