121660568 has 64 divisors (see below), whose sum is σ = 253044000. Its totient is φ = 54577152.

The previous prime is 121660541. The next prime is 121660573. The reversal of 121660568 is 865066121.

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 15 ways as a sum of consecutive naturals, for example, 429755 + ... + 430037.

Almost surely, 2^121660568 is an apocalyptic number.

It is an amenable number.

121660568 is an abundant number, since it is smaller than the sum of its proper divisors (131383432).

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

121660568 is a wasteful number, since it uses less digits than its factorization.

121660568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 121660568 is about 11029.9849501257. The cubic root of 121660568 is about 495.5071739480.

The spelling of 121660568 in words is "one hundred twenty-one million, six hundred sixty thousand, five hundred sixty-eight".