22111313112 has 144 divisors (see below), whose sum is σ = 71282451240. Its totient is φ = 6170556672.

The previous prime is 22111313101. The next prime is 22111313113. The reversal of 22111313112 is 21131311122.

22111313112 is a `hidden beast` number, since 221 + 1 + 131 + 311 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111313113) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 78828 + ... + 224580.

Almost surely, 2^22111313112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22111313112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35641225620).

22111313112 is an abundant number, since it is smaller than the sum of its proper divisors (49171138128).

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

22111313112 is a wasteful number, since it uses less digits than its factorization.

22111313112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145822 (or 145808 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 22111313112 its reverse (21131311122), we get a palindrome (43242624234).

The spelling of 22111313112 in words is "twenty-two billion, one hundred eleven million, three hundred thirteen thousand, one hundred twelve".