12215531212324 has 24 divisors (see below), whose sum is σ = 23331126405888. Its totient is φ = 5549998278240.

The previous prime is 12215531212289. The next prime is 12215531212349. The reversal of 12215531212324 is 42321213551221.

It is a self number, because there is not a number n which added to its sum of digits gives 12215531212324.

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, 62799519 + ... + 62993734.

It is an arithmetic number, because the mean of its divisors is an integer number (972130266912).

Almost surely, 2^{12215531212324} is an apocalyptic number.

It is an amenable number.

12215531212324 is a deficient number, since it is larger than the sum of its proper divisors (11115595193564).

12215531212324 is a wasteful number, since it uses less digits than its factorization.

12215531212324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125795475 (or 125795473 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

Adding to 12215531212324 its reverse (42321213551221), we get a palindrome (54536744763545).

The spelling of 12215531212324 in words is "twelve trillion, two hundred fifteen billion, five hundred thirty-one million, two hundred twelve thousand, three hundred twenty-four".