121664344 has 8 divisors (see below), whose sum is σ = 228120660. Its totient is φ = 60832168.

The previous prime is 121664327. The next prime is 121664351. The reversal of 121664344 is 443466121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7604014 + ... + 7604029.

Almost surely, 2^121664344 is an apocalyptic number.

It is an amenable number.

121664344 is a deficient number, since it is larger than the sum of its proper divisors (106456316).

121664344 is a wasteful number, since it uses less digits than its factorization.

121664344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15208049 (or 15208045 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 121664344 is about 11030.1561185688. The cubic root of 121664344 is about 495.5123002754.

The spelling of 121664344 in words is "one hundred twenty-one million, six hundred sixty-four thousand, three hundred forty-four".