11122113231 has 6 divisors (see below), whose sum is σ = 16065274680. Its totient is φ = 7414742148.

The previous prime is 11122113209. The next prime is 11122113281. The reversal of 11122113231 is 13231122111.

It is not a de Polignac number, because 11122113231 - 2¹¹ = 11122111183 is a prime.

It is a super-2 number, since 2×11122113231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122113281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617895171 + ... + 617895188.

It is an arithmetic number, because the mean of its divisors is an integer number (2677545780).

Almost surely, 2^11122113231 is an apocalyptic number.

11122113231 is a deficient number, since it is larger than the sum of its proper divisors (4943161449).

11122113231 is a wasteful number, since it uses less digits than its factorization.

11122113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235790365 (or 1235790362 counting only the distinct ones).

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

Adding to 11122113231 its reverse (13231122111), we get a palindrome (24353235342).

The spelling of 11122113231 in words is "eleven billion, one hundred twenty-two million, one hundred thirteen thousand, two hundred thirty-one".