22222212112212 has 96 divisors (see below), whose sum is σ = 59311321977600. Its totient is φ = 6343624015872.

The previous prime is 22222212112157. The next prime is 22222212112259. The reversal of 22222212112212 is 21221121222222.

It is a happy number.

It is a super-2 number, since 2×22222212112212² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 929437714 + ... + 929461622.

It is an arithmetic number, because the mean of its divisors is an integer number (617826270600).

Almost surely, 2^{22222212112212} is an apocalyptic number.

It is an amenable number.

22222212112212 is an abundant number, since it is smaller than the sum of its proper divisors (37089109865388).

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

22222212112212 is a wasteful number, since it uses less digits than its factorization.

22222212112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33185 (or 33183 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

Adding to 22222212112212 its reverse (21221121222222), we get a palindrome (43443333334434).

The spelling of 22222212112212 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twelve thousand, two hundred twelve".