11231201111011 has 48 divisors (see below), whose sum is σ = 14030619768000. Its totient is φ = 8931327498240.

The previous prime is 11231201110991. The next prime is 11231201111017. The reversal of 11231201111011 is 11011110213211.

It is not a de Polignac number, because 11231201111011 - 2²⁵ = 11231167556579 is a prime.

It is a super-2 number, since 2×11231201111011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231201111017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 453791865 + ... + 453816613.

It is an arithmetic number, because the mean of its divisors is an integer number (292304578500).

Almost surely, 2^{11231201111011} is an apocalyptic number.

11231201111011 is a deficient number, since it is larger than the sum of its proper divisors (2799418656989).

11231201111011 is a wasteful number, since it uses less digits than its factorization.

11231201111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32524 (or 32517 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 11231201111011 its reverse (11011110213211), we get a palindrome (22242311324222).

The spelling of 11231201111011 in words is "eleven trillion, two hundred thirty-one billion, two hundred one million, one hundred eleven thousand, eleven".