22101122222 has 16 divisors (see below), whose sum is σ = 33264200832. Its totient is φ = 11013080760.

The previous prime is 22101122213. The next prime is 22101122249. The reversal of 22101122222 is 22222110122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22101122222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2606033 + ... + 2614499.

It is an arithmetic number, because the mean of its divisors is an integer number (2079012552).

Almost surely, 2^22101122222 is an apocalyptic number.

22101122222 is a deficient number, since it is larger than the sum of its proper divisors (11163078610).

22101122222 is a wasteful number, since it uses less digits than its factorization.

22101122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12743.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22101122222 its reverse (22222110122), we get a palindrome (44323232344).

The spelling of 22101122222 in words is "twenty-two billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty-two".