12227508252 has 144 divisors (see below), whose sum is σ = 33015423840. Its totient is φ = 3961794240.

The previous prime is 12227508211. The next prime is 12227508263. The reversal of 12227508252 is 25280572221.

12227508252 is a `hidden beast` number, since 122 + 2 + 7 + 508 + 25 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11975502 + ... + 11976522.

Almost surely, 2^12227508252 is an apocalyptic number.

12227508252 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 12227508252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16507711920).

12227508252 is an abundant number, since it is smaller than the sum of its proper divisors (20787915588).

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

12227508252 is an equidigital number, since it uses as much as digits as its factorization.

12227508252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1063 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The spelling of 12227508252 in words is "twelve billion, two hundred twenty-seven million, five hundred eight thousand, two hundred fifty-two".