111000000109 has 2 divisors, whose sum is σ = 111000000110. Its totient is φ = 111000000108.

The previous prime is 111000000101. The next prime is 111000000127. The reversal of 111000000109 is 901000000111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79525692009 + 31474308100 = 282003^2 + 177410^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000000109 - 2³ = 111000000101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111000000101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500000054 + 55500000055.

It is an arithmetic number, because the mean of its divisors is an integer number (55500000055).

Almost surely, 2^111000000109 is an apocalyptic number.

It is an amenable number.

111000000109 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000000109 is an equidigital number, since it uses as much as digits as its factorization.

111000000109 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 13.

The spelling of 111000000109 in words is "one hundred eleven billion, one hundred nine", and thus it is an aban number.