1100111100111 has 12 divisors (see below), whose sum is σ = 1591148517192. Its totient is φ = 732438561456.

The previous prime is 1100111100103. The next prime is 1100111100163. The reversal of 1100111100111 is 1110011110011.

It is not a de Polignac number, because 1100111100111 - 2³ = 1100111100103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 1100111100093 and 1100111100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100111108111) 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 11 ways as a sum of consecutive naturals, for example, 80729361 + ... + 80742986.

It is an arithmetic number, because the mean of its divisors is an integer number (132595709766).

Almost surely, 2^{1100111100111} is an apocalyptic number.

1100111100111 is a deficient number, since it is larger than the sum of its proper divisors (491037417081).

1100111100111 is a wasteful number, since it uses less digits than its factorization.

1100111100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161473110 (or 161473107 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 1100111100111 its reverse (1110011110011), we get a palindrome (2210122210122).

The spelling of 1100111100111 in words is "one trillion, one hundred billion, one hundred eleven million, one hundred thousand, one hundred eleven".