12222221220012 has 24 divisors (see below), whose sum is σ = 28518752352496. Its totient is φ = 4074040001088.

The previous prime is 12222221219993. The next prime is 12222221220023. The reversal of 12222221220012 is 21002212222221.

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, 2685703 + ... + 5626494.

Almost surely, 2^{12222221220012} is an apocalyptic number.

12222221220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12222221220012 is an abundant number, since it is smaller than the sum of its proper divisors (16296531132484).

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

12222221220012 is a wasteful number, since it uses less digits than its factorization.

12222221220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434737 (or 8434735 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12222221220012 its reverse (21002212222221), we get a palindrome (33224433442233).

The spelling of 12222221220012 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty thousand, twelve".