12215331125 has 16 divisors (see below), whose sum is σ = 15472277184. Its totient is φ = 9626403600.

The previous prime is 12215331101. The next prime is 12215331133. The reversal of 12215331125 is 52113351221.

It is a de Polignac number, because none of the positive numbers 2^k-12215331125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12215331094 and 12215331103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720899 + ... + 737648.

It is an arithmetic number, because the mean of its divisors is an integer number (967017324).

Almost surely, 2^12215331125 is an apocalyptic number.

It is an amenable number.

12215331125 is a deficient number, since it is larger than the sum of its proper divisors (3256946059).

12215331125 is an equidigital number, since it uses as much as digits as its factorization.

12215331125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458629 (or 1458619 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

Adding to 12215331125 its reverse (52113351221), we get a palindrome (64328682346).

The spelling of 12215331125 in words is "twelve billion, two hundred fifteen million, three hundred thirty-one thousand, one hundred twenty-five".