22111111022 has 64 divisors (see below), whose sum is σ = 45371902464. Its totient is φ = 7801971840.

The previous prime is 22111111021. The next prime is 22111111069. The reversal of 22111111022 is 22011111122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 22111110988 and 22111111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111111021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1913 + ... + 210299.

It is an arithmetic number, because the mean of its divisors is an integer number (708935976).

Almost surely, 2^22111111022 is an apocalyptic number.

22111111022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22111111022 is an abundant number, since it is smaller than the sum of its proper divisors (23260791442).

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

22111111022 is a wasteful number, since it uses less digits than its factorization.

22111111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208473.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22111111022 its reverse (22011111122), we get a palindrome (44122222144).

The spelling of 22111111022 in words is "twenty-two billion, one hundred eleven million, one hundred eleven thousand, twenty-two".