22011109 has 2 divisors, whose sum is σ = 22011110. Its totient is φ = 22011108.

The previous prime is 22011091. The next prime is 22011113. The reversal of 22011109 is 90111022.

Together with previous prime (22011091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18948609 + 3062500 = 4353^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011109 - 2¹¹ = 22009061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22011092 and 22011101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22011149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005554 + 11005555.

It is an arithmetic number, because the mean of its divisors is an integer number (11005555).

Almost surely, 2^22011109 is an apocalyptic number.

It is an amenable number.

22011109 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011109 is an equidigital number, since it uses as much as digits as its factorization.

22011109 is an evil number, because the sum of its binary digits is even.

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

The square root of 22011109 is about 4691.5998337454. The cubic root of 22011109 is about 280.2510885459.

The spelling of 22011109 in words is "twenty-two million, eleven thousand, one hundred nine".