121064656 has 60 divisors (see below), whose sum is σ = 253604800. Its totient is φ = 55823040.

The previous prime is 121064611. The next prime is 121064689. The reversal of 121064656 is 656460121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1532425 + ... + 1532503.

Almost surely, 2^121064656 is an apocalyptic number.

121064656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121064656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126802400).

121064656 is an abundant number, since it is smaller than the sum of its proper divisors (132540144).

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

121064656 is an equidigital number, since it uses as much as digits as its factorization.

121064656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 121064656 is about 11002.9385165964. The cubic root of 121064656 is about 494.6968262219.

The spelling of 121064656 in words is "one hundred twenty-one million, sixty-four thousand, six hundred fifty-six".