109111105 has 12 divisors (see below), whose sum is σ = 132179580. Its totient is φ = 86465792.

The previous prime is 109111097. The next prime is 109111109. The reversal of 109111105 is 501111901.

It can be written as a sum of positive squares in 6 ways, for example, as 66064384 + 43046721 = 8128^2 + 6561^2 .

It is not a de Polignac number, because 109111105 - 2³ = 109111097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109111109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62991 + ... + 64699.

It is an arithmetic number, because the mean of its divisors is an integer number (11014965).

Almost surely, 2^109111105 is an apocalyptic number.

It is an amenable number.

109111105 is a deficient number, since it is larger than the sum of its proper divisors (23068475).

109111105 is an equidigital number, since it uses as much as digits as its factorization.

109111105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940 (or 1827 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 19.

The square root of 109111105 is about 10445.6261181415. The cubic root of 109111105 is about 477.8478665380.

The spelling of 109111105 in words is "one hundred nine million, one hundred eleven thousand, one hundred five".