121595660 has 12 divisors (see below), whose sum is σ = 255350928. Its totient is φ = 48638256.

The previous prime is 121595657. The next prime is 121595693. The reversal of 121595660 is 66595121.

It is a super-4 number, since 4×121595660⁴ (a number of 33 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121595660.

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, 3039872 + ... + 3039911.

It is an arithmetic number, because the mean of its divisors is an integer number (21279244).

Almost surely, 2^121595660 is an apocalyptic number.

121595660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121595660 is an abundant number, since it is smaller than the sum of its proper divisors (133755268).

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

121595660 is a wasteful number, since it uses less digits than its factorization.

121595660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6079792 (or 6079790 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 121595660 is about 11027.0422144834. The cubic root of 121595660 is about 495.4190377463.

The spelling of 121595660 in words is "one hundred twenty-one million, five hundred ninety-five thousand, six hundred sixty".