121600055020 has 48 divisors (see below), whose sum is σ = 263636545536. Its totient is φ = 47064024000.

The previous prime is 121600055009. The next prime is 121600055023. The reversal of 121600055020 is 20550006121.

It is a junction number, because it is equal to n+sod(n) for n = 121600054982 and 121600055000.

It is not an unprimeable number, because it can be changed into a prime (121600055023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6631665 + ... + 6649975.

It is an arithmetic number, because the mean of its divisors is an integer number (5492428032).

Almost surely, 2^121600055020 is an apocalyptic number.

121600055020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121600055020 is an abundant number, since it is smaller than the sum of its proper divisors (142036490516).

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

121600055020 is a wasteful number, since it uses less digits than its factorization.

121600055020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29062 (or 29060 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The spelling of 121600055020 in words is "one hundred twenty-one billion, six hundred million, fifty-five thousand, twenty".