13522112231 has 4 divisors (see below), whose sum is σ = 13743786264. Its totient is φ = 13300438200.

The previous prime is 13522112179. The next prime is 13522112249. The reversal of 13522112231 is 13221122531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13221122531 = 68483 ⋅193057.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13522112231 is a prime.

It is a super-2 number, since 2×13522112231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13522112197 and 13522112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13522312231) 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, 110836925 + ... + 110837046.

It is an arithmetic number, because the mean of its divisors is an integer number (3435946566).

Almost surely, 2^13522112231 is an apocalyptic number.

13522112231 is a deficient number, since it is larger than the sum of its proper divisors (221674033).

13522112231 is an equidigital number, since it uses as much as digits as its factorization.

13522112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221674032.

The product of its digits is 720, while the sum is 23.

Adding to 13522112231 its reverse (13221122531), we get a palindrome (26743234762).

The spelling of 13522112231 in words is "thirteen billion, five hundred twenty-two million, one hundred twelve thousand, two hundred thirty-one".