12120331325 has 18 divisors (see below), whose sum is σ = 15861865914. Its totient is φ = 9185928480.

The previous prime is 12120331273. The next prime is 12120331331. The reversal of 12120331325 is 52313302121.

It can be written as a sum of positive squares in 3 ways, for example, as 2512214884 + 9608116441 = 50122^2 + 98021^2 .

It is not a de Polignac number, because 12120331325 - 2¹⁰ = 12120330301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12120331325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 662462 + ... + 680511.

It is an arithmetic number, because the mean of its divisors is an integer number (881214773).

Almost surely, 2^12120331325 is an apocalyptic number.

It is an amenable number.

12120331325 is a deficient number, since it is larger than the sum of its proper divisors (3741534589).

12120331325 is a wasteful number, since it uses less digits than its factorization.

12120331325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343021 (or 1342997 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 12120331325 its reverse (52313302121), we get a palindrome (64433633446).

The spelling of 12120331325 in words is "twelve billion, one hundred twenty million, three hundred thirty-one thousand, three hundred twenty-five".