12444023223 has 32 divisors (see below), whose sum is σ = 18838008000. Its totient is φ = 8115838848.

The previous prime is 12444023219. The next prime is 12444023237. The reversal of 12444023223 is 32232044421.

It is not a de Polignac number, because 12444023223 - 2² = 12444023219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444003223) 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, 486961 + ... + 511877.

It is an arithmetic number, because the mean of its divisors is an integer number (588687750).

Almost surely, 2^12444023223 is an apocalyptic number.

12444023223 is a deficient number, since it is larger than the sum of its proper divisors (6393984777).

12444023223 is a wasteful number, since it uses less digits than its factorization.

12444023223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25328 (or 25322 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 12444023223 its reverse (32232044421), we get a palindrome (44676067644).

The spelling of 12444023223 in words is "twelve billion, four hundred forty-four million, twenty-three thousand, two hundred twenty-three".