111011111011109 has 2 divisors, whose sum is σ = 111011111011110. Its totient is φ = 111011111011108.

The previous prime is 111011111010977. The next prime is 111011111011147. The reversal of 111011111011109 is 901110111110111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89482234845025 + 21528876166084 = 9459505^2 + 4639922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111011111011109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111011111011159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505555505554 + 55505555505555.

It is an arithmetic number, because the mean of its divisors is an integer number (55505555505555).

Almost surely, 2^{111011111011109} is an apocalyptic number.

It is an amenable number.

111011111011109 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011111011109 is an equidigital number, since it uses as much as digits as its factorization.

111011111011109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 20.

The spelling of 111011111011109 in words is "one hundred eleven trillion, eleven billion, one hundred eleven million, eleven thousand, one hundred nine".