12507609122 has 18 divisors (see below), whose sum is σ = 19393745787. Its totient is φ = 6049696500.

The previous prime is 12507609089. The next prime is 12507609137. The reversal of 12507609122 is 22190670521.

It can be written as a sum of positive squares in only one way, i.e., 6253804561 + 6253804561 = 79081^2 + 79081^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=79081.

It is a super-2 number, since 2×12507609122² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4901747 + ... + 4904297.

Almost surely, 2^12507609122 is an apocalyptic number.

12507609122 is a deficient number, since it is larger than the sum of its proper divisors (6886136665).

12507609122 is an frugal number, since it uses more digits than its factorization.

12507609122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166 (or 2584 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 12507609122 in words is "twelve billion, five hundred seven million, six hundred nine thousand, one hundred twenty-two".