12515113422 has 36 divisors (see below), whose sum is σ = 31543196256. Its totient is φ = 3575746440.

The previous prime is 12515113381. The next prime is 12515113519. The reversal of 12515113422 is 22431151521.

It is a happy number.

12515113422 is a `hidden beast` number, since 12 + 515 + 1 + 134 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7093854 + ... + 7095617.

It is an arithmetic number, because the mean of its divisors is an integer number (876199896).

Almost surely, 2^12515113422 is an apocalyptic number.

12515113422 is an abundant number, since it is smaller than the sum of its proper divisors (19028082834).

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

12515113422 is a wasteful number, since it uses less digits than its factorization.

12515113422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14189493 (or 14189483 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

Adding to 12515113422 its reverse (22431151521), we get a palindrome (34946264943).

The spelling of 12515113422 in words is "twelve billion, five hundred fifteen million, one hundred thirteen thousand, four hundred twenty-two".