12144423321 has 24 divisors (see below), whose sum is σ = 18116833280. Its totient is φ = 7831209600.

The previous prime is 12144423301. The next prime is 12144423329. The reversal of 12144423321 is 12332444121.

12144423321 is a `hidden beast` number, since 1 + 214 + 4 + 423 + 3 + 21 = 666.

It is not a de Polignac number, because 12144423321 - 2¹⁵ = 12144390553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12144423329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 614961 + ... + 634401.

Almost surely, 2^12144423321 is an apocalyptic number.

It is an amenable number.

12144423321 is a deficient number, since it is larger than the sum of its proper divisors (5972409959).

12144423321 is a wasteful number, since it uses less digits than its factorization.

12144423321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21717 (or 21714 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 12144423321 its reverse (12332444121), we get a palindrome (24476867442).

The spelling of 12144423321 in words is "twelve billion, one hundred forty-four million, four hundred twenty-three thousand, three hundred twenty-one".