109919111 has 4 divisors (see below), whose sum is σ = 109972824. Its totient is φ = 109865400.

The previous prime is 109919107. The next prime is 109919113. The reversal of 109919111 is 111919901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111919901 = 3613 ⋅30977.

It is a cyclic number.

It is not a de Polignac number, because 109919111 - 2² = 109919107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109919113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23660 + ... + 27921.

It is an arithmetic number, because the mean of its divisors is an integer number (27493206).

Almost surely, 2^109919111 is an apocalyptic number.

109919111 is a deficient number, since it is larger than the sum of its proper divisors (53713).

109919111 is an equidigital number, since it uses as much as digits as its factorization.

109919111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53712.

The product of its (nonzero) digits is 729, while the sum is 32.

The square root of 109919111 is about 10484.2315407473. The cubic root of 109919111 is about 479.0245104939.

It can be divided in two parts, 10991 and 9111, that added together give a palindrome (20102).

The spelling of 109919111 in words is "one hundred nine million, nine hundred nineteen thousand, one hundred eleven".