13971567122 has 54 divisors (see below), whose sum is σ = 22818507957. Its totient is φ = 6415008912.

The previous prime is 13971567121. The next prime is 13971567161. The reversal of 13971567122 is 22176517931.

It can be written as a sum of positive squares in 2 ways, for example, as 13252844641 + 718722481 = 115121^2 + 26809^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=83581.

It is not an unprimeable number, because it can be changed into a prime (13971567121) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 168332093 + ... + 168332175.

Almost surely, 2^13971567122 is an apocalyptic number.

13971567122 is a deficient number, since it is larger than the sum of its proper divisors (8846940835).

13971567122 is an frugal number, since it uses more digits than its factorization.

13971567122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 157 counting only the distinct ones).

The product of its digits is 158760, while the sum is 44.

The spelling of 13971567122 in words is "thirteen billion, nine hundred seventy-one million, five hundred sixty-seven thousand, one hundred twenty-two".