121161056808 has 48 divisors (see below), whose sum is σ = 332942581440. Its totient is φ = 36715470880.

The previous prime is 121161056803. The next prime is 121161056873. The reversal of 121161056808 is 808650161121.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (121161056801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20858160 + ... + 20863967.

It is an arithmetic number, because the mean of its divisors is an integer number (6936303780).

Almost surely, 2^121161056808 is an apocalyptic number.

It is an amenable number.

121161056808 is an abundant number, since it is smaller than the sum of its proper divisors (211781524632).

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

121161056808 is a wasteful number, since it uses less digits than its factorization.

121161056808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41722158 (or 41722143 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The spelling of 121161056808 in words is "one hundred twenty-one billion, one hundred sixty-one million, fifty-six thousand, eight hundred eight".