22111222112 has 24 divisors (see below), whose sum is σ = 49750250256. Its totient is φ = 9476237952.

The previous prime is 22111222103. The next prime is 22111222129. The reversal of 22111222112 is 21122211122.

It is a super-2 number, since 2×22111222112² (a number of 21 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 3 ways as a sum of consecutive naturals, for example, 49355183 + ... + 49355630.

It is an arithmetic number, because the mean of its divisors is an integer number (2072927094).

Almost surely, 2^22111222112 is an apocalyptic number.

It is an amenable number.

22111222112 is an abundant number, since it is smaller than the sum of its proper divisors (27639028144).

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

22111222112 is an equidigital number, since it uses as much as digits as its factorization.

22111222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98710830 (or 98710822 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

Adding to 22111222112 its reverse (21122211122), we get a palindrome (43233433234).

It can be divided in two parts, 2211122 and 2112, that multiplied together give a palindrome (4669889664).

The spelling of 22111222112 in words is "twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twelve".