11001100111011 has 6 divisors (see below), whose sum is σ = 15890477938140. Its totient is φ = 7334066740668.

The previous prime is 11001100110989. The next prime is 11001100111013. The reversal of 11001100111011 is 11011100110011.

It is not a de Polignac number, because 11001100111011 - 2¹⁴ = 11001100094627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1222344456779 = 11001100111011 / (1 + 1 + 0 + 0 + 1 + 1 + 0 + 0 + 1 + 1 + 1 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 11001100110984 and 11001100111002.

It is not an unprimeable number, because it can be changed into a prime (11001100111013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611172228381 + ... + 611172228398.

It is an arithmetic number, because the mean of its divisors is an integer number (2648412989690).

Almost surely, 2^{11001100111011} is an apocalyptic number.

11001100111011 is a deficient number, since it is larger than the sum of its proper divisors (4889377827129).

11001100111011 is a wasteful number, since it uses less digits than its factorization.

11001100111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222344456785 (or 1222344456782 counting only the distinct ones).

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

Adding to 11001100111011 its reverse (11011100110011), we get a palindrome (22012200221022).

The spelling of 11001100111011 in words is "eleven trillion, one billion, one hundred million, one hundred eleven thousand, eleven".