11001111201111 has 16 divisors (see below), whose sum is σ = 15305970551040. Its totient is φ = 7015166188800.

The previous prime is 11001111201079. The next prime is 11001111201173. The reversal of 11001111201111 is 11110211110011.

It is not a de Polignac number, because 11001111201111 - 2⁵ = 11001111201079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001111201011) 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 15 ways as a sum of consecutive naturals, for example, 26455360 + ... + 26867978.

It is an arithmetic number, because the mean of its divisors is an integer number (956623159440).

Almost surely, 2^{11001111201111} is an apocalyptic number.

11001111201111 is a deficient number, since it is larger than the sum of its proper divisors (4304859349929).

11001111201111 is a wasteful number, since it uses less digits than its factorization.

11001111201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799046.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 11001111201111 its reverse (11110211110011), we get a palindrome (22111322311122).

The spelling of 11001111201111 in words is "eleven trillion, one billion, one hundred eleven million, two hundred one thousand, one hundred eleven".