22111112212212 has 24 divisors (see below), whose sum is σ = 51592671546976. Its totient is φ = 7370359825248.

The previous prime is 22111112212193. The next prime is 22111112212213. The reversal of 22111112212212 is 21221221111122.

It is a super-2 number, since 2×22111112212212² (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 not an unprimeable number, because it can be changed into a prime (22111112212213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14011143 + ... + 15509169.

Almost surely, 2^{22111112212212} is an apocalyptic number.

It is an amenable number.

22111112212212 is an abundant number, since it is smaller than the sum of its proper divisors (29481559334764).

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

22111112212212 is a wasteful number, since it uses less digits than its factorization.

22111112212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728047 (or 2728045 counting only the distinct ones).

The product of its digits is 128, while the sum is 21.

Adding to 22111112212212 its reverse (21221221111122), we get a palindrome (43332333323334).

The spelling of 22111112212212 in words is "twenty-two trillion, one hundred eleven billion, one hundred twelve million, two hundred twelve thousand, two hundred twelve".