121644785124 has 48 divisors (see below), whose sum is σ = 315418488000. Its totient is φ = 40542717888.

The previous prime is 121644785051. The next prime is 121644785209. The reversal of 121644785124 is 421587446121.

121644785124 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 447 + 85 + 124 = 666.

121644785124 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 121644785124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758344 + ... + 904640.

It is an arithmetic number, because the mean of its divisors is an integer number (6571218500).

Almost surely, 2^121644785124 is an apocalyptic number.

It is an amenable number.

121644785124 is an abundant number, since it is smaller than the sum of its proper divisors (193773702876).

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

121644785124 is a wasteful number, since it uses less digits than its factorization.

121644785124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154009 (or 154001 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The spelling of 121644785124 in words is "one hundred twenty-one billion, six hundred forty-four million, seven hundred eighty-five thousand, one hundred twenty-four".