1101100111011 has 24 divisors (see below), whose sum is σ = 1649637930304. Its totient is φ = 733953963240.

The previous prime is 1101100110991. The next prime is 1101100111021. The reversal of 1101100111011 is 1101110011011.

It is not a de Polignac number, because 1101100111011 - 2²⁷ = 1100965893283 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101100110984 and 1101100111002.

It is not an unprimeable number, because it can be changed into a prime (1101100111021) 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, 1251960 + ... + 1941546.

Almost surely, 2^{1101100111011} is an apocalyptic number.

1101100111011 is a deficient number, since it is larger than the sum of its proper divisors (548537819293).

1101100111011 is an frugal number, since it uses more digits than its factorization.

1101100111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696173 (or 696161 counting only the distinct ones).

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

Adding to 1101100111011 its reverse (1101110011011), we get a palindrome (2202210122022).

The spelling of 1101100111011 in words is "one trillion, one hundred one billion, one hundred million, one hundred eleven thousand, eleven".