12121553315 has 8 divisors (see below), whose sum is σ = 14681807280. Its totient is φ = 9606613792.

The previous prime is 12121553303. The next prime is 12121553341. The reversal of 12121553315 is 51335512121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121553315 is a prime.

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, 11328020 + ... + 11329089.

It is an arithmetic number, because the mean of its divisors is an integer number (1835225910).

Almost surely, 2^12121553315 is an apocalyptic number.

12121553315 is a deficient number, since it is larger than the sum of its proper divisors (2560253965).

12121553315 is a wasteful number, since it uses less digits than its factorization.

12121553315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22657221.

The product of its digits is 4500, while the sum is 29.

The spelling of 12121553315 in words is "twelve billion, one hundred twenty-one million, five hundred fifty-three thousand, three hundred fifteen".