121078664 has 16 divisors (see below), whose sum is σ = 259454400. Its totient is φ = 51890832.

The previous prime is 121078649. The next prime is 121078681. The reversal of 121078664 is 466870121.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 1081004 + ... + 1081115.

It is an arithmetic number, because the mean of its divisors is an integer number (16215900).

Almost surely, 2^121078664 is an apocalyptic number.

121078664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121078664 is an abundant number, since it is smaller than the sum of its proper divisors (138375736).

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

121078664 is a wasteful number, since it uses less digits than its factorization.

121078664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162132 (or 2162128 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 121078664 is about 11003.5750554081. The cubic root of 121078664 is about 494.7159054096.

The spelling of 121078664 in words is "one hundred twenty-one million, seventy-eight thousand, six hundred sixty-four".