22212220111 has 4 divisors (see below), whose sum is σ = 23518821312. Its totient is φ = 20905618912.

The previous prime is 22212220109. The next prime is 22212220127. The reversal of 22212220111 is 11102221222.

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 22212220111 - 2¹ = 22212220109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212220181) 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, 653300575 + ... + 653300608.

It is an arithmetic number, because the mean of its divisors is an integer number (5879705328).

Almost surely, 2^22212220111 is an apocalyptic number.

22212220111 is a deficient number, since it is larger than the sum of its proper divisors (1306601201).

22212220111 is a wasteful number, since it uses less digits than its factorization.

22212220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306601200.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22212220111 its reverse (11102221222), we get a palindrome (33314441333).

The spelling of 22212220111 in words is "twenty-two billion, two hundred twelve million, two hundred twenty thousand, one hundred eleven".