12115105252 has 24 divisors (see below), whose sum is σ = 21729442392. Its totient is φ = 5906841600.

The previous prime is 12115105229. The next prime is 12115105333. The reversal of 12115105252 is 25250151121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1170597796 + 10944507456 = 34214^2 + 104616^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329052 + ... + 364012.

It is an arithmetic number, because the mean of its divisors is an integer number (905393433).

Almost surely, 2^12115105252 is an apocalyptic number.

It is an amenable number.

12115105252 is a deficient number, since it is larger than the sum of its proper divisors (9614337140).

12115105252 is a wasteful number, since it uses less digits than its factorization.

12115105252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37119 (or 37117 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 12115105252 its reverse (25250151121), we get a palindrome (37365256373).

The spelling of 12115105252 in words is "twelve billion, one hundred fifteen million, one hundred five thousand, two hundred fifty-two".