12444233421 has 32 divisors (see below), whose sum is σ = 18117354240. Its totient is φ = 7575220224.

The previous prime is 12444233357. The next prime is 12444233441. The reversal of 12444233421 is 12433244421.

It is not a de Polignac number, because 12444233421 - 2⁶ = 12444233357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444233441) 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 31 ways as a sum of consecutive naturals, for example, 89325 + ... + 181293.

It is an arithmetic number, because the mean of its divisors is an integer number (566167320).

Almost surely, 2^12444233421 is an apocalyptic number.

It is an amenable number.

12444233421 is a deficient number, since it is larger than the sum of its proper divisors (5673120819).

12444233421 is a wasteful number, since it uses less digits than its factorization.

12444233421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92085.

The product of its digits is 18432, while the sum is 30.

Adding to 12444233421 its reverse (12433244421), we get a palindrome (24877477842).

The spelling of 12444233421 in words is "twelve billion, four hundred forty-four million, two hundred thirty-three thousand, four hundred twenty-one".