12121520924 has 24 divisors (see below), whose sum is σ = 21902821248. Its totient is φ = 5863677120.

The previous prime is 12121520903. The next prime is 12121520951. The reversal of 12121520924 is 42902512121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546254 + ... + 568010.

It is an arithmetic number, because the mean of its divisors is an integer number (912617552).

Almost surely, 2^12121520924 is an apocalyptic number.

It is an amenable number.

12121520924 is a deficient number, since it is larger than the sum of its proper divisors (9781300324).

12121520924 is a wasteful number, since it uses less digits than its factorization.

12121520924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26285 (or 26283 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 12121520924 in words is "twelve billion, one hundred twenty-one million, five hundred twenty thousand, nine hundred twenty-four".