12215232552 has 16 divisors (see below), whose sum is σ = 30538081440. Its totient is φ = 4071744176.

The previous prime is 12215232521. The next prime is 12215232607. The reversal of 12215232552 is 25523251221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254483988 + ... + 254484035.

It is an arithmetic number, because the mean of its divisors is an integer number (1908630090).

Almost surely, 2^12215232552 is an apocalyptic number.

12215232552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12215232552 is an abundant number, since it is smaller than the sum of its proper divisors (18322848888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12215232552 is a wasteful number, since it uses less digits than its factorization.

12215232552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508968032 (or 508968028 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

Adding to 12215232552 its reverse (25523251221), we get a palindrome (37738483773).

The spelling of 12215232552 in words is "twelve billion, two hundred fifteen million, two hundred thirty-two thousand, five hundred fifty-two".