111111000111109 has 2 divisors, whose sum is σ = 111111000111110. Its totient is φ = 111111000111108.

The previous prime is 111111000111103. The next prime is 111111000111151. The reversal of 111111000111109 is 901111000111111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60503739912225 + 50607260198884 = 7778415^2 + 7113878^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111000111109 - 2¹¹ = 111111000109061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111000111103) 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, 55555500055554 + 55555500055555.

It is an arithmetic number, because the mean of its divisors is an integer number (55555500055555).

Almost surely, 2^{111111000111109} is an apocalyptic number.

It is an amenable number.

111111000111109 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111000111109 is an equidigital number, since it uses as much as digits as its factorization.

111111000111109 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 19.

The spelling of 111111000111109 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred eleven thousand, one hundred nine".