12222333312 has 64 divisors (see below), whose sum is σ = 37103520000. Its totient is φ = 3492094464.

The previous prime is 12222333257. The next prime is 12222333317. The reversal of 12222333312 is 21333322221.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

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 (12222333317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2270812 + ... + 2276187.

It is an arithmetic number, because the mean of its divisors is an integer number (579742500).

Almost surely, 2^12222333312 is an apocalyptic number.

12222333312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12222333312 is an abundant number, since it is smaller than the sum of its proper divisors (24881186688).

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

12222333312 is an equidigital number, since it uses as much as digits as its factorization.

12222333312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547023 (or 4547011 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

Adding to 12222333312 its reverse (21333322221), we get a palindrome (33555655533).

The spelling of 12222333312 in words is "twelve billion, two hundred twenty-two million, three hundred thirty-three thousand, three hundred twelve".