12331222443 has 24 divisors (see below), whose sum is σ = 18875394720. Its totient is φ = 7743738240.

The previous prime is 12331222381. The next prime is 12331222483. The reversal of 12331222443 is 34422213321.

12331222443 is a `hidden beast` number, since 123 + 312 + 224 + 4 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-12331222443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12331222483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 565471 + ... + 586872.

It is an arithmetic number, because the mean of its divisors is an integer number (786474780).

Almost surely, 2^12331222443 is an apocalyptic number.

12331222443 is a deficient number, since it is larger than the sum of its proper divisors (6544172277).

12331222443 is a wasteful number, since it uses less digits than its factorization.

12331222443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152419 (or 1152416 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 12331222443 its reverse (34422213321), we get a palindrome (46753435764).

The spelling of 12331222443 in words is "twelve billion, three hundred thirty-one million, two hundred twenty-two thousand, four hundred forty-three".