11166611 has 2 divisors, whose sum is σ = 11166612. Its totient is φ = 11166610.

The previous prime is 11166587. The next prime is 11166613. The reversal of 11166611 is 11666111.

11166611 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 an emirp because it is prime and its reverse (11666111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11166611 - 2²² = 6972307 is a prime.

Together with 11166613, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (11166613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5583305 + 5583306.

It is an arithmetic number, because the mean of its divisors is an integer number (5583306).

Almost surely, 2^11166611 is an apocalyptic number.

11166611 is a deficient number, since it is larger than the sum of its proper divisors (1).

11166611 is an equidigital number, since it uses as much as digits as its factorization.

11166611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 23.

The square root of 11166611 is about 3341.6479467472. The cubic root of 11166611 is about 223.5152343447.

Subtracting 11166611 from its reverse (11666111), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 11166611 in words is "eleven million, one hundred sixty-six thousand, six hundred eleven".