12111321223 has 2 divisors, whose sum is σ = 12111321224. Its totient is φ = 12111321222.

The previous prime is 12111321217. The next prime is 12111321227. The reversal of 12111321223 is 32212311121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12111321223 - 2⁵ = 12111321191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12111321223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111321227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055660611 + 6055660612.

It is an arithmetic number, because the mean of its divisors is an integer number (6055660612).

Almost surely, 2^12111321223 is an apocalyptic number.

12111321223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111321223 is an equidigital number, since it uses as much as digits as its factorization.

12111321223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

Adding to 12111321223 its reverse (32212311121), we get a palindrome (44323632344).

The spelling of 12111321223 in words is "twelve billion, one hundred eleven million, three hundred twenty-one thousand, two hundred twenty-three".