109660111 has 4 divisors (see below), whose sum is σ = 119629224. Its totient is φ = 99691000.

The previous prime is 109660087. The next prime is 109660129. The reversal of 109660111 is 111066901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111066901 = 11 ⋅10096991.

It is a cyclic number.

It is not a de Polignac number, because 109660111 - 2¹⁷ = 109529039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109660171) 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, 4984540 + ... + 4984561.

It is an arithmetic number, because the mean of its divisors is an integer number (29907306).

Almost surely, 2^109660111 is an apocalyptic number.

109660111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

109660111 is a deficient number, since it is larger than the sum of its proper divisors (9969113).

109660111 is an equidigital number, since it uses as much as digits as its factorization.

109660111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9969112.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 109660111 is about 10471.8723731719. The cubic root of 109660111 is about 478.6479762692.

The spelling of 109660111 in words is "one hundred nine million, six hundred sixty thousand, one hundred eleven".