12506021316 has 72 divisors (see below), whose sum is σ = 31757806080. Its totient is φ = 4149560064.

The previous prime is 12506021279. The next prime is 12506021327. The reversal of 12506021316 is 61312060521.

12506021316 is a `hidden beast` number, since 1 + 2 + 50 + 602 + 1 + 3 + 1 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12506021316.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 10225081 + ... + 10226303.

It is an arithmetic number, because the mean of its divisors is an integer number (441080640).

Almost surely, 2^12506021316 is an apocalyptic number.

It is an amenable number.

12506021316 is an abundant number, since it is smaller than the sum of its proper divisors (19251784764).

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

12506021316 is a wasteful number, since it uses less digits than its factorization.

12506021316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305 (or 2300 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 12506021316 its reverse (61312060521), we get a palindrome (73818081837).

The spelling of 12506021316 in words is "twelve billion, five hundred six million, twenty-one thousand, three hundred sixteen".