1100100111111 has 24 divisors (see below), whose sum is σ = 1615261043760. Its totient is φ = 721297699200.

The previous prime is 1100100111101. The next prime is 1100100111119. The reversal of 1100100111111 is 1111110010011.

It is not a de Polignac number, because 1100100111111 - 2¹⁴ = 1100100094727 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1100100111093 and 1100100111102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100100111119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5104995 + ... + 5316123.

It is an arithmetic number, because the mean of its divisors is an integer number (67302543490).

Almost surely, 2^{1100100111111} is an apocalyptic number.

1100100111111 is a deficient number, since it is larger than the sum of its proper divisors (515160932649).

1100100111111 is a wasteful number, since it uses less digits than its factorization.

1100100111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220687 (or 220684 counting only the distinct ones).

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

Adding to 1100100111111 its reverse (1111110010011), we get a palindrome (2211210121122).

It can be divided in two parts, 110010011 and 1111, that multiplied together give a palindrome (122221122221).

The spelling of 1100100111111 in words is "one trillion, one hundred billion, one hundred million, one hundred eleven thousand, one hundred eleven".