121715572 has 12 divisors (see below), whose sum is σ = 232366176. Its totient is φ = 55325240.

The previous prime is 121715569. The next prime is 121715621. The reversal of 121715572 is 275517121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1383088 + ... + 1383175.

It is an arithmetic number, because the mean of its divisors is an integer number (19363848).

Almost surely, 2^121715572 is an apocalyptic number.

It is an amenable number.

121715572 is a deficient number, since it is larger than the sum of its proper divisors (110650604).

121715572 is a wasteful number, since it uses less digits than its factorization.

121715572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766278 (or 2766276 counting only the distinct ones).

The product of its digits is 4900, while the sum is 31.

The square root of 121715572 is about 11032.4780534565. The cubic root of 121715572 is about 495.5818373350.

The spelling of 121715572 in words is "one hundred twenty-one million, seven hundred fifteen thousand, five hundred seventy-two".