12512445102 has 24 divisors (see below), whose sum is σ = 27141965136. Its totient is φ = 4165943136.

The previous prime is 12512445083. The next prime is 12512445161. The reversal of 12512445102 is 20154421521.

It is a happy number.

12512445102 is a `hidden beast` number, since 1 + 2 + 512 + 4 + 45 + 102 = 666.

It is a super-2 number, since 2×12512445102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390138 + ... + 420989.

It is an arithmetic number, because the mean of its divisors is an integer number (1130915214).

Almost surely, 2^12512445102 is an apocalyptic number.

12512445102 is an abundant number, since it is smaller than the sum of its proper divisors (14629520034).

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

12512445102 is a wasteful number, since it uses less digits than its factorization.

12512445102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811992 (or 811989 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 12512445102 its reverse (20154421521), we get a palindrome (32666866623).

The spelling of 12512445102 in words is "twelve billion, five hundred twelve million, four hundred forty-five thousand, one hundred two".