109109919911 has 4 divisors (see below), whose sum is σ = 115528150512. Its totient is φ = 102691689312.

The previous prime is 109109919881. The next prime is 109109919913. The reversal of 109109919911 is 119919901901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109109919911 - 2¹⁰ = 109109918887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109109919911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109109919913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3209115275 + ... + 3209115308.

It is an arithmetic number, because the mean of its divisors is an integer number (28882037628).

Almost surely, 2^109109919911 is an apocalyptic number.

109109919911 is a deficient number, since it is larger than the sum of its proper divisors (6418230601).

109109919911 is an equidigital number, since it uses as much as digits as its factorization.

109109919911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6418230600.

The product of its (nonzero) digits is 59049, while the sum is 50.

It can be divided in two parts, 10910991 and 9911, that multiplied together give a palindrome (108138831801).

The spelling of 109109919911 in words is "one hundred nine billion, one hundred nine million, nine hundred nineteen thousand, nine hundred eleven".