121328664 has 16 divisors (see below), whose sum is σ = 303321720. Its totient is φ = 40442880.

The previous prime is 121328633. The next prime is 121328681. The reversal of 121328664 is 466823121.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 2527657 + ... + 2527704.

Almost surely, 2^121328664 is an apocalyptic number.

It is an amenable number.

121328664 is an abundant number, since it is smaller than the sum of its proper divisors (181993056).

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

121328664 is a wasteful number, since it uses less digits than its factorization.

121328664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055370 (or 5055366 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 121328664 is about 11014.9291418511. The cubic root of 121328664 is about 495.0561634060.

The spelling of 121328664 in words is "one hundred twenty-one million, three hundred twenty-eight thousand, six hundred sixty-four".