12231323472 has 40 divisors (see below), whose sum is σ = 33456269376. Its totient is φ = 3837277696.

The previous prime is 12231323437. The next prime is 12231323491. The reversal of 12231323472 is 27432313221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7493868 + ... + 7495499.

Almost surely, 2^12231323472 is an apocalyptic number.

12231323472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12231323472 is an abundant number, since it is smaller than the sum of its proper divisors (21224945904).

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

12231323472 is a wasteful number, since it uses less digits than its factorization.

12231323472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14989395 (or 14989389 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

Adding to 12231323472 its reverse (27432313221), we get a palindrome (39663636693).

The spelling of 12231323472 in words is "twelve billion, two hundred thirty-one million, three hundred twenty-three thousand, four hundred seventy-two".