22220122222 has 4 divisors (see below), whose sum is σ = 33330183336. Its totient is φ = 11110061110.

The previous prime is 22220122207. The next prime is 22220122229. The reversal of 22220122222 is 22222102222.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22220122222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220122229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555030554 + ... + 5555030557.

It is an arithmetic number, because the mean of its divisors is an integer number (8332545834).

Almost surely, 2^22220122222 is an apocalyptic number.

22220122222 is a deficient number, since it is larger than the sum of its proper divisors (11110061114).

22220122222 is a wasteful number, since it uses less digits than its factorization.

22220122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110061113.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22220122222 its reverse (22222102222), we get a palindrome (44442224444).

The spelling of 22220122222 in words is "twenty-two billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty-two".