22220222111 has 4 divisors (see below), whose sum is σ = 22221489000. Its totient is φ = 22218955224.

The previous prime is 22220222041. The next prime is 22220222131. The reversal of 22220222111 is 11122202222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22220222111 - 2²⁶ = 22153113247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22220222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220222131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606761 + ... + 642338.

It is an arithmetic number, because the mean of its divisors is an integer number (5555372250).

Almost surely, 2^22220222111 is an apocalyptic number.

22220222111 is a deficient number, since it is larger than the sum of its proper divisors (1266889).

22220222111 is a wasteful number, since it uses less digits than its factorization.

22220222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266888.

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

Adding to 22220222111 its reverse (11122202222), we get a palindrome (33342424333).

The spelling of 22220222111 in words is "twenty-two billion, two hundred twenty million, two hundred twenty-two thousand, one hundred eleven".