111133112231 has 4 divisors (see below), whose sum is σ = 111133992264. Its totient is φ = 111132232200.

The previous prime is 111133112221. The next prime is 111133112257. The reversal of 111133112231 is 132211331111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 132211331111 = 25057 ⋅5276423.

It is a cyclic number.

It is not a de Polignac number, because 111133112231 - 2¹⁴ = 111133095847 is a prime.

It is a super-2 number, since 2×111133112231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111133112221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210785 + ... + 516426.

It is an arithmetic number, because the mean of its divisors is an integer number (27783498066).

Almost surely, 2^111133112231 is an apocalyptic number.

111133112231 is a deficient number, since it is larger than the sum of its proper divisors (880033).

111133112231 is an equidigital number, since it uses as much as digits as its factorization.

111133112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880032.

The product of its digits is 108, while the sum is 20.

Adding to 111133112231 its reverse (132211331111), we get a palindrome (243344443342).

The spelling of 111133112231 in words is "one hundred eleven billion, one hundred thirty-three million, one hundred twelve thousand, two hundred thirty-one".