121436717924 has 6 divisors (see below), whose sum is σ = 212514256374. Its totient is φ = 60718358960.

The previous prime is 121436717867. The next prime is 121436717951. The reversal of 121436717924 is 429717634121.

It can be written as a sum of positive squares in only one way, i.e., 116588102500 + 4848615424 = 341450^2 + 69632^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15179589737 + ... + 15179589744.

It is an arithmetic number, because the mean of its divisors is an integer number (35419042729).

Almost surely, 2^121436717924 is an apocalyptic number.

It is an amenable number.

121436717924 is a deficient number, since it is larger than the sum of its proper divisors (91077538450).

121436717924 is a wasteful number, since it uses less digits than its factorization.

121436717924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30359179485 (or 30359179483 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The spelling of 121436717924 in words is "one hundred twenty-one billion, four hundred thirty-six million, seven hundred seventeen thousand, nine hundred twenty-four".