22111222222 has 16 divisors (see below), whose sum is σ = 34915856400. Its totient is φ = 10472716800.

The previous prime is 22111222219. The next prime is 22111222277. The reversal of 22111222222 is 22222211122.

It is a super-2 number, since 2×22111222222² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22111222222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490222 + ... + 533422.

It is an arithmetic number, because the mean of its divisors is an integer number (2182241025).

Almost surely, 2^22111222222 is an apocalyptic number.

22111222222 is a deficient number, since it is larger than the sum of its proper divisors (12804634178).

22111222222 is a wasteful number, since it uses less digits than its factorization.

22111222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56691.

The product of its digits is 256, while the sum is 19.

Adding to 22111222222 its reverse (22222211122), we get a palindrome (44333433344).

The spelling of 22111222222 in words is "twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twenty-two".