12223603644 has 96 divisors (see below), whose sum is σ = 34069109760. Its totient is φ = 3335152128.

The previous prime is 12223603633. The next prime is 12223603649. The reversal of 12223603644 is 44630632221.

It is a super-2 number, since 2×12223603644² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223603649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1256752 + ... + 1266440.

It is an arithmetic number, because the mean of its divisors is an integer number (354886560).

Almost surely, 2^12223603644 is an apocalyptic number.

12223603644 is a gapful number since it is divisible by the number (14) 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 12223603644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17034554880).

12223603644 is an abundant number, since it is smaller than the sum of its proper divisors (21845506116).

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

12223603644 is a wasteful number, since it uses less digits than its factorization.

12223603644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10379 (or 10377 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

The spelling of 12223603644 in words is "twelve billion, two hundred twenty-three million, six hundred three thousand, six hundred forty-four".