11011112011 has 4 divisors (see below), whose sum is σ = 11120133024. Its totient is φ = 10902091000.

The previous prime is 11011111999. The next prime is 11011112029. The reversal of 11011112011 is 11021111011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11011112011 - 2⁷ = 11011111883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011112071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54510355 + ... + 54510556.

It is an arithmetic number, because the mean of its divisors is an integer number (2780033256).

Almost surely, 2^11011112011 is an apocalyptic number.

11011112011 is a deficient number, since it is larger than the sum of its proper divisors (109021013).

11011112011 is a wasteful number, since it uses less digits than its factorization.

11011112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109021012.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 11011112011 its reverse (11021111011), we get a palindrome (22032223022).

The spelling of 11011112011 in words is "eleven billion, eleven million, one hundred twelve thousand, eleven".