12222212212 has 24 divisors (see below), whose sum is σ = 24468145856. Its totient is φ = 5233007808.

The previous prime is 12222212173. The next prime is 12222212263. The reversal of 12222212212 is 21221222221.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12222212212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182358 + ... + 240205.

Almost surely, 2^12222212212 is an apocalyptic number.

It is an amenable number.

12222212212 is an abundant number, since it is smaller than the sum of its proper divisors (12245933644).

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

12222212212 is a wasteful number, since it uses less digits than its factorization.

12222212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423607 (or 423605 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

Adding to 12222212212 its reverse (21221222221), we get a palindrome (33443434433).

The spelling of 12222212212 in words is "twelve billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twelve".