11011109 has 2 divisors, whose sum is σ = 11011110. Its totient is φ = 11011108.

The previous prime is 11011103. The next prime is 11011123. The reversal of 11011109 is 90111011.

It is a happy number.

It is an a-pointer prime, because the next prime (11011123) can be obtained adding 11011109 to its sum of digits (14).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7317025 + 3694084 = 2705^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011109 - 2⁴ = 11011093 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11011093 and 11011102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505554 + 5505555.

It is an arithmetic number, because the mean of its divisors is an integer number (5505555).

Almost surely, 2^11011109 is an apocalyptic number.

It is an amenable number.

11011109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011109 is an equidigital number, since it uses as much as digits as its factorization.

11011109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 14.

The square root of 11011109 is about 3318.2991124972. The cubic root of 11011109 is about 222.4728511251.

The spelling of 11011109 in words is "eleven million, eleven thousand, one hundred nine".