111100110109 has 2 divisors, whose sum is σ = 111100110110. Its totient is φ = 111100110108.

The previous prime is 111100110097. The next prime is 111100110139. The reversal of 111100110109 is 901011001111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108407538009 + 2692572100 = 329253^2 + 51890^2 .

It is a cyclic number.

It is not a de Polignac number, because 111100110109 - 2²¹ = 111098012957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111100110092 and 111100110101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100110139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550055054 + 55550055055.

It is an arithmetic number, because the mean of its divisors is an integer number (55550055055).

Almost surely, 2^111100110109 is an apocalyptic number.

It is an amenable number.

111100110109 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100110109 is an equidigital number, since it uses as much as digits as its factorization.

111100110109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 16.

The spelling of 111100110109 in words is "one hundred eleven billion, one hundred million, one hundred ten thousand, one hundred nine".