22222200212 has 12 divisors (see below), whose sum is σ = 38890170816. Its totient is φ = 11110722840.

The previous prime is 22222200193. The next prime is 22222200229. The reversal of 22222200212 is 21200222222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70037 + ... + 222147.

It is an arithmetic number, because the mean of its divisors is an integer number (3240847568).

Almost surely, 2^22222200212 is an apocalyptic number.

It is an amenable number.

22222200212 is a deficient number, since it is larger than the sum of its proper divisors (16667970604).

22222200212 is a wasteful number, since it uses less digits than its factorization.

22222200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188638 (or 188636 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22222200212 its reverse (21200222222), we get a palindrome (43422422434).

The spelling of 22222200212 in words is "twenty-two billion, two hundred twenty-two million, two hundred thousand, two hundred twelve".