11121131212231 has 2 divisors, whose sum is σ = 11121131212232. Its totient is φ = 11121131212230.

The previous prime is 11121131212211. The next prime is 11121131212397. The reversal of 11121131212231 is 13221213112111.

It is a weak prime.

It is an emirp because it is prime and its reverse (13221213112111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11121131212231 - 2⁵ = 11121131212199 is a prime.

It is a super-2 number, since 2×11121131212231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121131212211) 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 as a sum of consecutive naturals, namely, 5560565606115 + 5560565606116.

It is an arithmetic number, because the mean of its divisors is an integer number (5560565606116).

Almost surely, 2^{11121131212231} is an apocalyptic number.

11121131212231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121131212231 is an equidigital number, since it uses as much as digits as its factorization.

11121131212231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 22.

Adding to 11121131212231 its reverse (13221213112111), we get a palindrome (24342344324342).

The spelling of 11121131212231 in words is "eleven trillion, one hundred twenty-one billion, one hundred thirty-one million, two hundred twelve thousand, two hundred thirty-one".