109917811 has 2 divisors, whose sum is σ = 109917812. Its totient is φ = 109917810.

The previous prime is 109917809. The next prime is 109917817. The reversal of 109917811 is 118719901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109917811 - 2¹ = 109917809 is a prime.

Together with 109917809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (109917817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54958905 + 54958906.

It is an arithmetic number, because the mean of its divisors is an integer number (54958906).

Almost surely, 2^109917811 is an apocalyptic number.

109917811 is a deficient number, since it is larger than the sum of its proper divisors (1).

109917811 is an equidigital number, since it uses as much as digits as its factorization.

109917811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 37.

The square root of 109917811 is about 10484.1695426963. The cubic root of 109917811 is about 479.0226220315.

The spelling of 109917811 in words is "one hundred nine million, nine hundred seventeen thousand, eight hundred eleven".