22222120202212 has 18 divisors (see below), whose sum is σ = 45237887554902. Its totient is φ = 9523765800864.

The previous prime is 22222120202171. The next prime is 22222120202353. The reversal of 22222120202212 is 21220202122222.

It can be written as a sum of positive squares in only one way, i.e., 20771863603456 + 1450256598756 = 4557616^2 + 1204266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56689081953 + ... + 56689082344.

Almost surely, 2^{22222120202212} is an apocalyptic number.

It is an amenable number.

22222120202212 is an abundant number, since it is smaller than the sum of its proper divisors (23015767352690).

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

22222120202212 is a wasteful number, since it uses less digits than its factorization.

22222120202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113378164315 (or 113378164306 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22222120202212 its reverse (21220202122222), we get a palindrome (43442322324434).

The spelling of 22222120202212 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty million, two hundred two thousand, two hundred twelve".