12442212312 has 16 divisors (see below), whose sum is σ = 31105530840. Its totient is φ = 4147404096.

The previous prime is 12442212311. The next prime is 12442212323. The reversal of 12442212312 is 21321224421.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 518425513 = 12442212312 / (1 + 2 + 4 + 4 + 2 + 2 + 1 + 2 + 3 + 1 + 2).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442212311) 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 3 ways as a sum of consecutive naturals, for example, 259212733 + ... + 259212780.

Almost surely, 2^12442212312 is an apocalyptic number.

12442212312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12442212312 is an abundant number, since it is smaller than the sum of its proper divisors (18663318528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12442212312 is a wasteful number, since it uses less digits than its factorization.

12442212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518425522 (or 518425518 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

Adding to 12442212312 its reverse (21321224421), we get a palindrome (33763436733).

The spelling of 12442212312 in words is "twelve billion, four hundred forty-two million, two hundred twelve thousand, three hundred twelve".