12223144432 has 80 divisors (see below), whose sum is σ = 25400017152. Its totient is φ = 5677977600.

The previous prime is 12223144421. The next prime is 12223144447. The reversal of 12223144432 is 23444132221.

It is a self number, because there is not a number n which added to its sum of digits gives 12223144432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16675138 + ... + 16675870.

Almost surely, 2^12223144432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12223144432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12700008576).

12223144432 is an abundant number, since it is smaller than the sum of its proper divisors (13176872720).

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

12223144432 is a wasteful number, since it uses less digits than its factorization.

12223144432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466 (or 1460 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

Adding to 12223144432 its reverse (23444132221), we get a palindrome (35667276653).

The spelling of 12223144432 in words is "twelve billion, two hundred twenty-three million, one hundred forty-four thousand, four hundred thirty-two".