11115109 has 2 divisors, whose sum is σ = 11115110. Its totient is φ = 11115108.

The previous prime is 11115061. The next prime is 11115119. The reversal of 11115109 is 90151111.

11115109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8392609 + 2722500 = 2897^2 + 1650^2 .

It is a cyclic number.

It is not a de Polignac number, because 11115109 - 2¹⁷ = 10984037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11115119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557554 + 5557555.

It is an arithmetic number, because the mean of its divisors is an integer number (5557555).

Almost surely, 2^11115109 is an apocalyptic number.

It is an amenable number.

11115109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115109 is an equidigital number, since it uses as much as digits as its factorization.

11115109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 19.

The square root of 11115109 is about 3333.9329627334. The cubic root of 11115109 is about 223.1710766703.

The spelling of 11115109 in words is "eleven million, one hundred fifteen thousand, one hundred nine".