12222212022 has 24 divisors (see below), whose sum is σ = 26981111664. Its totient is φ = 3997201104.

The previous prime is 12222212017. The next prime is 12222212039. The reversal of 12222212022 is 22021222221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12222211986 and 12222212004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6404818 + ... + 6406725.

It is an arithmetic number, because the mean of its divisors is an integer number (1124212986).

Almost surely, 2^12222212022 is an apocalyptic number.

12222212022 is an abundant number, since it is smaller than the sum of its proper divisors (14758899642).

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

12222212022 is a wasteful number, since it uses less digits than its factorization.

12222212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12811604 (or 12811601 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12222212022 its reverse (22021222221), we get a palindrome (34243434243).

The spelling of 12222212022 in words is "twelve billion, two hundred twenty-two million, two hundred twelve thousand, twenty-two".