13115220112 has 40 divisors (see below), whose sum is σ = 26941268952. Its totient is φ = 6163660800.

The previous prime is 13115220067. The next prime is 13115220137. The reversal of 13115220112 is 21102251131.

It can be written as a sum of positive squares in 4 ways, for example, as 322705296 + 12792514816 = 17964^2 + 113104^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13115220112.

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, 175312 + ... + 238672.

Almost surely, 2^13115220112 is an apocalyptic number.

It is an amenable number.

13115220112 is an abundant number, since it is smaller than the sum of its proper divisors (13826048840).

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

13115220112 is a wasteful number, since it uses less digits than its factorization.

13115220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64147 (or 64141 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 13115220112 its reverse (21102251131), we get a palindrome (34217471243).

The spelling of 13115220112 in words is "thirteen billion, one hundred fifteen million, two hundred twenty thousand, one hundred twelve".