12043111331 has 2 divisors, whose sum is σ = 12043111332. Its totient is φ = 12043111330.

The previous prime is 12043111319. The next prime is 12043111357. The reversal of 12043111331 is 13311134021.

It is a weak prime.

It is an emirp because it is prime and its reverse (13311134021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12043111331 is a prime.

It is a super-2 number, since 2×12043111331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12043116331) 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, 6021555665 + 6021555666.

It is an arithmetic number, because the mean of its divisors is an integer number (6021555666).

Almost surely, 2^12043111331 is an apocalyptic number.

12043111331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12043111331 is an equidigital number, since it uses as much as digits as its factorization.

12043111331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12043111331 its reverse (13311134021), we get a palindrome (25354245352).

The spelling of 12043111331 in words is "twelve billion, forty-three million, one hundred eleven thousand, three hundred thirty-one".