110111001100909 has 2 divisors, whose sum is σ = 110111001100910. Its totient is φ = 110111001100908.

The previous prime is 110111001100907. The next prime is 110111001100943. The reversal of 110111001100909 is 909001100111011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105116893538409 + 4994107562500 = 10252653^2 + 2234750^2 .

It is a cyclic number.

It is not a de Polignac number, because 110111001100909 - 2¹ = 110111001100907 is a prime.

Together with 110111001100907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110111001100907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055500550454 + 55055500550455.

It is an arithmetic number, because the mean of its divisors is an integer number (55055500550455).

Almost surely, 2^{110111001100909} is an apocalyptic number.

It is an amenable number.

110111001100909 is a deficient number, since it is larger than the sum of its proper divisors (1).

110111001100909 is an equidigital number, since it uses as much as digits as its factorization.

110111001100909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 25.

The spelling of 110111001100909 in words is "one hundred ten trillion, one hundred eleven billion, one million, one hundred thousand, nine hundred nine".