11122231131 has 24 divisors (see below), whose sum is σ = 17543298240. Its totient is φ = 6734070000.

The previous prime is 11122231123. The next prime is 11122231189. The reversal of 11122231131 is 13113222111.

It is not a de Polignac number, because 11122231131 - 2³ = 11122231123 is a prime.

It is a super-2 number, since 2×11122231131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11122233131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45756 + ... + 156006.

It is an arithmetic number, because the mean of its divisors is an integer number (730970760).

Almost surely, 2^11122231131 is an apocalyptic number.

11122231131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11122231131 is a deficient number, since it is larger than the sum of its proper divisors (6421067109).

11122231131 is a wasteful number, since it uses less digits than its factorization.

11122231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111287 (or 111284 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 11122231131 its reverse (13113222111), we get a palindrome (24235453242).

The spelling of 11122231131 in words is "eleven billion, one hundred twenty-two million, two hundred thirty-one thousand, one hundred thirty-one".