12213144423 has 12 divisors (see below), whose sum is σ = 17642500200. Its totient is φ = 8141500176.

The previous prime is 12213144421. The next prime is 12213144481. The reversal of 12213144423 is 32444131221.

12213144423 is a `hidden beast` number, since 1 + 2 + 213 + 1 + 4 + 442 + 3 = 666.

It is not a de Polignac number, because 12213144423 - 2¹ = 12213144421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213144421) 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 11 ways as a sum of consecutive naturals, for example, 105640 + ... + 188642.

It is an arithmetic number, because the mean of its divisors is an integer number (1470208350).

Almost surely, 2^12213144423 is an apocalyptic number.

12213144423 is a deficient number, since it is larger than the sum of its proper divisors (5429355777).

12213144423 is a wasteful number, since it uses less digits than its factorization.

12213144423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99358 (or 99355 counting only the distinct ones).

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

Adding to 12213144423 its reverse (32444131221), we get a palindrome (44657275644).

The spelling of 12213144423 in words is "twelve billion, two hundred thirteen million, one hundred forty-four thousand, four hundred twenty-three".