109911991099 has 8 divisors (see below), whose sum is σ = 110088342000. Its totient is φ = 109735730016.

The previous prime is 109911991067. The next prime is 109911991127. The reversal of 109911991099 is 990199119901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109911991099 - 2⁵ = 109911991067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109911991009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2684409 + ... + 2725045.

It is an arithmetic number, because the mean of its divisors is an integer number (13761042750).

Almost surely, 2^109911991099 is an apocalyptic number.

109911991099 is a deficient number, since it is larger than the sum of its proper divisors (176350901).

109911991099 is an equidigital number, since it uses as much as digits as its factorization.

109911991099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44909.

The product of its (nonzero) digits is 531441, while the sum is 58.

The spelling of 109911991099 in words is "one hundred nine billion, nine hundred eleven million, nine hundred ninety-one thousand, ninety-nine".