11131116112 has 80 divisors (see below), whose sum is σ = 23634148032. Its totient is φ = 5057095680.

The previous prime is 11131116109. The next prime is 11131116119. The reversal of 11131116112 is 21161113111.

It is a self number, because there is not a number n which added to its sum of digits gives 11131116112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131116119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314163 + ... + 1322605.

Almost surely, 2^11131116112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11131116112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11817074016).

11131116112 is an abundant number, since it is smaller than the sum of its proper divisors (12503031920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11131116112 is a wasteful number, since it uses less digits than its factorization.

11131116112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8636 (or 8630 counting only the distinct ones).

The product of its digits is 36, while the sum is 19.

Adding to 11131116112 its reverse (21161113111), we get a palindrome (32292229223).

The spelling of 11131116112 in words is "eleven billion, one hundred thirty-one million, one hundred sixteen thousand, one hundred twelve".