12586815122 has 30 divisors (see below), whose sum is σ = 22039228743. Its totient is φ = 5391017436.

The previous prime is 12586815061. The next prime is 12586815127. The reversal of 12586815122 is 22151868521.

It can be written as a sum of positive squares in only one way, i.e., 6293407561 + 6293407561 = 79331^2 + 79331^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=79331.

It is a self number, because there is not a number n which added to its sum of digits gives 12586815122.

It is not an unprimeable number, because it can be changed into a prime (12586815127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 7773629 + ... + 7775247.

Almost surely, 2^12586815122 is an apocalyptic number.

12586815122 is a deficient number, since it is larger than the sum of its proper divisors (9452413621).

12586815122 is an frugal number, since it uses more digits than its factorization.

12586815122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268 (or 1628 counting only the distinct ones).

The product of its digits is 76800, while the sum is 41.

The spelling of 12586815122 in words is "twelve billion, five hundred eighty-six million, eight hundred fifteen thousand, one hundred twenty-two".