121056860916 has 36 divisors (see below), whose sum is σ = 307695493924. Its totient is φ = 40129344000.

The previous prime is 121056860909. The next prime is 121056860933. The reversal of 121056860916 is 619068650121.

121056860916 is a `hidden beast` number, since 1 + 2 + 10 + 568 + 60 + 9 + 16 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15921392400 + 105135468516 = 126180^2 + 324246^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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, 9282685 + ... + 9295716.

Almost surely, 2^121056860916 is an apocalyptic number.

It is an amenable number.

121056860916 is an abundant number, since it is smaller than the sum of its proper divisors (186638633008).

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

121056860916 is a wasteful number, since it uses less digits than its factorization.

121056860916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18578592 (or 18578587 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 121056860916 in words is "one hundred twenty-one billion, fifty-six million, eight hundred sixty thousand, nine hundred sixteen".