22222220220012 has 24 divisors (see below), whose sum is σ = 51853268917296. Its totient is φ = 7407203634688.

The previous prime is 22222220220007. The next prime is 22222220220023. The reversal of 22222220220012 is 21002202222222.

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, 24931953 + ... + 25807880.

It is an arithmetic number, because the mean of its divisors is an integer number (2160552871554).

Almost surely, 2^{22222220220012} is an apocalyptic number.

It is an amenable number.

22222220220012 is an abundant number, since it is smaller than the sum of its proper divisors (29631048697284).

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

22222220220012 is a wasteful number, since it uses less digits than its factorization.

22222220220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50776337 (or 50776335 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 22222220220012 its reverse (21002202222222), we get a palindrome (43224422442234).

The spelling of 22222220220012 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twenty thousand, twelve".