22221110111 has 2 divisors, whose sum is σ = 22221110112. Its totient is φ = 22221110110.

The previous prime is 22221110089. The next prime is 22221110123. The reversal of 22221110111 is 11101112222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22221110111 - 2³⁰ = 21147368287 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221110141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110555055 + 11110555056.

It is an arithmetic number, because the mean of its divisors is an integer number (11110555056).

Almost surely, 2^22221110111 is an apocalyptic number.

22221110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221110111 is an equidigital number, since it uses as much as digits as its factorization.

22221110111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22221110111 its reverse (11101112222), we get a palindrome (33322222333).

It can be divided in two parts, 2222 and 1110111, that multiplied together give a palindrome (2466666642).

The spelling of 22221110111 in words is "twenty-two billion, two hundred twenty-one million, one hundred ten thousand, one hundred eleven".