11109611 has 2 divisors, whose sum is σ = 11109612. Its totient is φ = 11109610.

The previous prime is 11109601. The next prime is 11109613. The reversal of 11109611 is 11690111.

11109611 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11109611 is a prime.

Together with 11109613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11109613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5554805 + 5554806.

It is an arithmetic number, because the mean of its divisors is an integer number (5554806).

Almost surely, 2^11109611 is an apocalyptic number.

11109611 is a deficient number, since it is larger than the sum of its proper divisors (1).

11109611 is an equidigital number, since it uses as much as digits as its factorization.

11109611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 20.

The square root of 11109611 is about 3333.1083090713. The cubic root of 11109611 is about 223.1342740040.

Adding to 11109611 its reverse (11690111), we get a palindrome (22799722).

The spelling of 11109611 in words is "eleven million, one hundred nine thousand, six hundred eleven".