12521113492 has 12 divisors (see below), whose sum is σ = 22446386676. Its totient is φ = 6107860160.

The previous prime is 12521113471. The next prime is 12521113499. The reversal of 12521113492 is 29431112521.

It can be written as a sum of positive squares in 2 ways, for example, as 5398428676 + 7122684816 = 73474^2 + 84396^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12521113499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38173963 + ... + 38174290.

It is an arithmetic number, because the mean of its divisors is an integer number (1870532223).

Almost surely, 2^12521113492 is an apocalyptic number.

It is an amenable number.

12521113492 is a deficient number, since it is larger than the sum of its proper divisors (9925273184).

12521113492 is a wasteful number, since it uses less digits than its factorization.

12521113492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76348298 (or 76348296 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The spelling of 12521113492 in words is "twelve billion, five hundred twenty-one million, one hundred thirteen thousand, four hundred ninety-two".