22210111111 has 4 divisors (see below), whose sum is σ = 22285913832. Its totient is φ = 22134308392.

The previous prime is 22210111087. The next prime is 22210111139. The reversal of 22210111111 is 11111101222.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22210111111 is a prime.

It is a Duffinian number.

22210111111 is a modest number, since divided by 111111 gives 22210 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22210111091 and 22210111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210111181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37900921 + ... + 37901506.

It is an arithmetic number, because the mean of its divisors is an integer number (5571478458).

Almost surely, 2^22210111111 is an apocalyptic number.

22210111111 is a deficient number, since it is larger than the sum of its proper divisors (75802721).

22210111111 is an equidigital number, since it uses as much as digits as its factorization.

22210111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75802720.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 22210111111 its reverse (11111101222), we get a palindrome (33321212333).

The spelling of 22210111111 in words is "twenty-two billion, two hundred ten million, one hundred eleven thousand, one hundred eleven".