12031320211 has 2 divisors, whose sum is σ = 12031320212. Its totient is φ = 12031320210.

The previous prime is 12031320199. The next prime is 12031320221. The reversal of 12031320211 is 11202313021.

12031320211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (11202313021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12031320211 - 2¹¹ = 12031318163 is a prime.

It is not a weakly prime, because it can be changed into another prime (12031320221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015660105 + 6015660106.

It is an arithmetic number, because the mean of its divisors is an integer number (6015660106).

Almost surely, 2^12031320211 is an apocalyptic number.

12031320211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031320211 is an equidigital number, since it uses as much as digits as its factorization.

12031320211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12031320211 its reverse (11202313021), we get a palindrome (23233633232).

The spelling of 12031320211 in words is "twelve billion, thirty-one million, three hundred twenty thousand, two hundred eleven".