111111100001109 has 128 divisors (see below), whose sum is σ = 178460958412800. Its totient is φ = 67919080400640.

The previous prime is 111111100001087. The next prime is 111111100001123. The reversal of 111111100001109 is 901100001111111.

It is not a de Polignac number, because 111111100001109 - 2⁸ = 111111100000853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111111100001091 and 111111100001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111100001159) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 85012317634 + ... + 85012318940.

It is an arithmetic number, because the mean of its divisors is an integer number (1394226237600).

Almost surely, 2^{111111100001109} is an apocalyptic number.

It is an amenable number.

111111100001109 is a deficient number, since it is larger than the sum of its proper divisors (67349858411691).

111111100001109 is a wasteful number, since it uses less digits than its factorization.

111111100001109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592 (or 3586 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 18.

The spelling of 111111100001109 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, one thousand, one hundred nine".