121415113888 has 24 divisors (see below), whose sum is σ = 251616849120. Its totient is φ = 57512422080.

The previous prime is 121415113871. The next prime is 121415113921. The reversal of 121415113888 is 888311514121.

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 3 ways as a sum of consecutive naturals, for example, 99847348 + ... + 99848563.

It is an arithmetic number, because the mean of its divisors is an integer number (10484035380).

Almost surely, 2^121415113888 is an apocalyptic number.

It is an amenable number.

121415113888 is an abundant number, since it is smaller than the sum of its proper divisors (130201735232).

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

121415113888 is a wasteful number, since it uses less digits than its factorization.

121415113888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199695940 (or 199695932 counting only the distinct ones).

The product of its digits is 61440, while the sum is 43.

The spelling of 121415113888 in words is "one hundred twenty-one billion, four hundred fifteen million, one hundred thirteen thousand, eight hundred eighty-eight".