12226550656 has 32 divisors (see below), whose sum is σ = 24665925600. Its totient is φ = 6035887104.

The previous prime is 12226550653. The next prime is 12226550659. The reversal of 12226550656 is 65605562221.

It is an interprime number because it is at equal distance from previous prime (12226550653) and next prime (12226550659).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12226550653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594445 + ... + 614668.

It is an arithmetic number, because the mean of its divisors is an integer number (770810175).

Almost surely, 2^12226550656 is an apocalyptic number.

12226550656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12226550656 is an abundant number, since it is smaller than the sum of its proper divisors (12439374944).

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

12226550656 is an equidigital number, since it uses as much as digits as its factorization.

12226550656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209206 (or 1209194 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 12226550656 in words is "twelve billion, two hundred twenty-six million, five hundred fifty thousand, six hundred fifty-six".