11201231111 has 16 divisors (see below), whose sum is σ = 12911298048. Its totient is φ = 9518776800.

The previous prime is 11201231089. The next prime is 11201231123. The reversal of 11201231111 is 11113210211.

11201231111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11201231111 - 2²⁶ = 11134122247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201231141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1077806 + ... + 1088148.

It is an arithmetic number, because the mean of its divisors is an integer number (806956128).

Almost surely, 2^11201231111 is an apocalyptic number.

11201231111 is a deficient number, since it is larger than the sum of its proper divisors (1710066937).

11201231111 is a wasteful number, since it uses less digits than its factorization.

11201231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11662.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11201231111 its reverse (11113210211), we get a palindrome (22314441322).

The spelling of 11201231111 in words is "eleven billion, two hundred one million, two hundred thirty-one thousand, one hundred eleven".