121916372 has 12 divisors (see below), whose sum is σ = 216359136. Its totient is φ = 60099480.

The previous prime is 121916371. The next prime is 121916413. The reversal of 121916372 is 273619121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121916371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214358 + ... + 214925.

It is an arithmetic number, because the mean of its divisors is an integer number (18029928).

Almost surely, 2^121916372 is an apocalyptic number.

It is an amenable number.

121916372 is a deficient number, since it is larger than the sum of its proper divisors (94442764).

121916372 is a wasteful number, since it uses less digits than its factorization.

121916372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429358 (or 429356 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 121916372 is about 11041.5747065353. The cubic root of 121916372 is about 495.8542159570.

The spelling of 121916372 in words is "one hundred twenty-one million, nine hundred sixteen thousand, three hundred seventy-two".