22111222112112 has 80 divisors (see below), whose sum is σ = 65324831300352. Its totient is φ = 6313226196480.

The previous prime is 22111222112069. The next prime is 22111222112167. The reversal of 22111222112112 is 21121122211122.

It is a super-2 number, since 2×22111222112112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 15 ways as a sum of consecutive naturals, for example, 21719538 + ... + 22714769.

Almost surely, 2^{22111222112112} is an apocalyptic number.

It is an amenable number.

22111222112112 is an abundant number, since it is smaller than the sum of its proper divisors (43213609188240).

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

22111222112112 is a wasteful number, since it uses less digits than its factorization.

22111222112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44435806 (or 44435800 counting only the distinct ones).

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

Adding to 22111222112112 its reverse (21121122211122), we get a palindrome (43232344323234).

It can be divided in two parts, 2211122 and 2112112, that added together give a palindrome (4323234).

The spelling of 22111222112112 in words is "twenty-two trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twelve".