121366564 has 12 divisors (see below), whose sum is σ = 231699888. Its totient is φ = 55166600.

The previous prime is 121366559. The next prime is 121366571. The reversal of 121366564 is 465663121.

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, 1379122 + ... + 1379209.

It is an arithmetic number, because the mean of its divisors is an integer number (19308324).

Almost surely, 2^121366564 is an apocalyptic number.

It is an amenable number.

121366564 is a deficient number, since it is larger than the sum of its proper divisors (110333324).

121366564 is a wasteful number, since it uses less digits than its factorization.

121366564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758346 (or 2758344 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 121366564 is about 11016.6493998856. The cubic root of 121366564 is about 495.1077057062.

The spelling of 121366564 in words is "one hundred twenty-one million, three hundred sixty-six thousand, five hundred sixty-four".