22090111 has 2 divisors, whose sum is σ = 22090112. Its totient is φ = 22090110.

The previous prime is 22090093. The next prime is 22090121. The reversal of 22090111 is 11109022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22090111 - 2⁷ = 22089983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22090121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11045055 + 11045056.

It is an arithmetic number, because the mean of its divisors is an integer number (11045056).

Almost surely, 2^22090111 is an apocalyptic number.

22090111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22090111 is an equidigital number, since it uses as much as digits as its factorization.

22090111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 22090111 is about 4700.0118084958. The cubic root of 22090111 is about 280.5859794489.

Adding to 22090111 its reverse (11109022), we get a palindrome (33199133).

It can be divided in two parts, 22090 and 111, that added together give a square (22201 = 149²).

The spelling of 22090111 in words is "twenty-two million, ninety thousand, one hundred eleven".