11201112131 has 4 divisors (see below), whose sum is σ = 12219395064. Its totient is φ = 10182829200.

The previous prime is 11201112119. The next prime is 11201112187. The reversal of 11201112131 is 13121110211.

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 11201112131 - 2⁶ = 11201112067 is a prime.

It is a super-2 number, since 2×11201112131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201112331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509141450 + ... + 509141471.

It is an arithmetic number, because the mean of its divisors is an integer number (3054848766).

Almost surely, 2^11201112131 is an apocalyptic number.

11201112131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11201112131 is a deficient number, since it is larger than the sum of its proper divisors (1018282933).

11201112131 is a wasteful number, since it uses less digits than its factorization.

11201112131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018282932.

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

Adding to 11201112131 its reverse (13121110211), we get a palindrome (24322222342).

The spelling of 11201112131 in words is "eleven billion, two hundred one million, one hundred twelve thousand, one hundred thirty-one".