111100110110909 has 2 divisors, whose sum is σ = 111100110110910. Its totient is φ = 111100110110908.

The previous prime is 111100110110863. The next prime is 111100110110929. The reversal of 111100110110909 is 909011011001111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86285465266009 + 24814644844900 = 9288997^2 + 4981430^2 .

It is a cyclic number.

It is not a de Polignac number, because 111100110110909 - 2²⁴ = 111100093333693 is a prime.

It is a super-2 number, since 2×111100110110909² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100110110929) 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, 55550055055454 + 55550055055455.

It is an arithmetic number, because the mean of its divisors is an integer number (55550055055455).

Almost surely, 2^{111100110110909} is an apocalyptic number.

It is an amenable number.

111100110110909 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100110110909 is an equidigital number, since it uses as much as digits as its factorization.

111100110110909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 26.

The spelling of 111100110110909 in words is "one hundred eleven trillion, one hundred billion, one hundred ten million, one hundred ten thousand, nine hundred nine".