22222102201212 has 12 divisors (see below), whose sum is σ = 51851571802856. Its totient is φ = 7407367400400.

The previous prime is 22222102201207. The next prime is 22222102201213. The reversal of 22222102201212 is 21210220122222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×22222102201212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222102201213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925920925039 + ... + 925920925062.

Almost surely, 2^{22222102201212} is an apocalyptic number.

It is an amenable number.

22222102201212 is an abundant number, since it is smaller than the sum of its proper divisors (29629469601644).

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

22222102201212 is a wasteful number, since it uses less digits than its factorization.

22222102201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851841850108 (or 1851841850106 counting only the distinct ones).

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

Adding to 22222102201212 its reverse (21210220122222), we get a palindrome (43432322323434).

The spelling of 22222102201212 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred two million, two hundred one thousand, two hundred twelve".