22222422222 has 192 divisors, whose sum is σ = 61758100992. Its totient is φ = 5183481600.

The previous prime is 22222422169. The next prime is 22222422247.

22222422222 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22222422192 and 22222422201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2439897 + ... + 2448987.

It is an arithmetic number, because the mean of its divisors is an integer number (321656776).

Almost surely, 2^22222422222 is an apocalyptic number.

22222422222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22222422222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30879050496).

22222422222 is an abundant number, since it is smaller than the sum of its proper divisors (39535678770).

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

22222422222 is a wasteful number, since it uses less digits than its factorization.

22222422222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9175 (or 9164 counting only the distinct ones).

The product of its digits is 4096, while the sum is 24.

It can be divided in two parts, 22222 and 422222, that added together give a palindrome (444444).

The spelling of 22222422222 in words is "twenty-two billion, two hundred twenty-two million, four hundred twenty-two thousand, two hundred twenty-two".