22116109 has 2 divisors, whose sum is σ = 22116110. Its totient is φ = 22116108.

The previous prime is 22116079. The next prime is 22116163. The reversal of 22116109 is 90161122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15382084 + 6734025 = 3922^2 + 2595^2 .

It is a cyclic number.

It is not a de Polignac number, because 22116109 - 2¹¹ = 22114061 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22116109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111109) 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, 11058054 + 11058055.

It is an arithmetic number, because the mean of its divisors is an integer number (11058055).

Almost surely, 2^22116109 is an apocalyptic number.

It is an amenable number.

22116109 is a deficient number, since it is larger than the sum of its proper divisors (1).

22116109 is an equidigital number, since it uses as much as digits as its factorization.

22116109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 22116109 is about 4702.7767329526. The cubic root of 22116109 is about 280.6960108025.

The spelling of 22116109 in words is "twenty-two million, one hundred sixteen thousand, one hundred nine".