12521112606 has 24 divisors (see below), whose sum is σ = 27207272664. Its totient is φ = 4161674160.

The previous prime is 12521112599. The next prime is 12521112607. The reversal of 12521112606 is 60621112521.

12521112606 is a `hidden beast` number, since 1 + 2 + 52 + 1 + 1 + 1 + 2 + 606 = 666.

It is a super-2 number, since 2×12521112606² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12521112606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12521112607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 996085 + ... + 1008576.

It is an arithmetic number, because the mean of its divisors is an integer number (1133636361).

Almost surely, 2^12521112606 is an apocalyptic number.

12521112606 is an abundant number, since it is smaller than the sum of its proper divisors (14686160058).

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

12521112606 is a wasteful number, since it uses less digits than its factorization.

12521112606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005016 (or 2005013 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 12521112606 in words is "twelve billion, five hundred twenty-one million, one hundred twelve thousand, six hundred six".