108209111 has 2 divisors, whose sum is σ = 108209112. Its totient is φ = 108209110.

The previous prime is 108209107. The next prime is 108209159. The reversal of 108209111 is 111902801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 108209111 - 2² = 108209107 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108209191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54104555 + 54104556.

It is an arithmetic number, because the mean of its divisors is an integer number (54104556).

Almost surely, 2^108209111 is an apocalyptic number.

108209111 is a deficient number, since it is larger than the sum of its proper divisors (1).

108209111 is an equidigital number, since it uses as much as digits as its factorization.

108209111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 108209111 is about 10402.3608378098. The cubic root of 108209111 is about 476.5274720850.

The spelling of 108209111 in words is "one hundred eight million, two hundred nine thousand, one hundred eleven".