12215254332 has 12 divisors (see below), whose sum is σ = 28502260136. Its totient is φ = 4071751440.

The previous prime is 12215254321. The next prime is 12215254339. The reversal of 12215254332 is 23345251221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12215254332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215254339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508968919 + ... + 508968942.

Almost surely, 2^12215254332 is an apocalyptic number.

12215254332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12215254332 is an abundant number, since it is smaller than the sum of its proper divisors (16287005804).

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

12215254332 is a wasteful number, since it uses less digits than its factorization.

12215254332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017937868 (or 1017937866 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The spelling of 12215254332 in words is "twelve billion, two hundred fifteen million, two hundred fifty-four thousand, three hundred thirty-two".