12215223815352 has 128 divisors (see below), whose sum is σ = 32052343680000. Its totient is φ = 3871941765120.

The previous prime is 12215223815203. The next prime is 12215223815519. The reversal of 12215223815352 is 25351832251221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134957952 + ... + 135048432.

It is an arithmetic number, because the mean of its divisors is an integer number (250408935000).

Almost surely, 2^{12215223815352} is an apocalyptic number.

12215223815352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12215223815352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16026171840000).

12215223815352 is an abundant number, since it is smaller than the sum of its proper divisors (19837119864648).

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

12215223815352 is a wasteful number, since it uses less digits than its factorization.

12215223815352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91941 (or 91937 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The spelling of 12215223815352 in words is "twelve trillion, two hundred fifteen billion, two hundred twenty-three million, eight hundred fifteen thousand, three hundred fifty-two".