109990111 has 16 divisors (see below), whose sum is σ = 138498048. Its totient is φ = 84852000.

The previous prime is 109990103. The next prime is 109990123. The reversal of 109990111 is 111099901.

It is a cyclic number.

It is not a de Polignac number, because 109990111 - 2³ = 109990103 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 (109990141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706 + ... + 14848.

It is an arithmetic number, because the mean of its divisors is an integer number (8656128).

Almost surely, 2^109990111 is an apocalyptic number.

109990111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

109990111 is a deficient number, since it is larger than the sum of its proper divisors (28507937).

109990111 is a wasteful number, since it uses less digits than its factorization.

109990111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14262.

The product of its (nonzero) digits is 729, while the sum is 31.

The square root of 109990111 is about 10487.6170315282. The cubic root of 109990111 is about 479.1276269878.

The spelling of 109990111 in words is "one hundred nine million, nine hundred ninety thousand, one hundred eleven".