12111142231 has 2 divisors, whose sum is σ = 12111142232. Its totient is φ = 12111142230.

The previous prime is 12111142187. The next prime is 12111142243. The reversal of 12111142231 is 13224111121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12111142231 - 2²⁷ = 11976924503 is a prime.

It is a super-2 number, since 2×12111142231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12111142199 and 12111142208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111142271) 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 as a sum of consecutive naturals, namely, 6055571115 + 6055571116.

It is an arithmetic number, because the mean of its divisors is an integer number (6055571116).

Almost surely, 2^12111142231 is an apocalyptic number.

12111142231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111142231 is an equidigital number, since it uses as much as digits as its factorization.

12111142231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 19.

Adding to 12111142231 its reverse (13224111121), we get a palindrome (25335253352).

The spelling of 12111142231 in words is "twelve billion, one hundred eleven million, one hundred forty-two thousand, two hundred thirty-one".