12031330111 has 2 divisors, whose sum is σ = 12031330112. Its totient is φ = 12031330110.

The previous prime is 12031330099. The next prime is 12031330123. The reversal of 12031330111 is 11103313021.

It is a balanced prime because it is at equal distance from previous prime (12031330099) and next prime (12031330123).

It is an emirp because it is prime and its reverse (11103313021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12031330111 - 2¹⁹ = 12030805823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12031334111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015665055 + 6015665056.

It is an arithmetic number, because the mean of its divisors is an integer number (6015665056).

Almost surely, 2^12031330111 is an apocalyptic number.

12031330111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031330111 is an equidigital number, since it uses as much as digits as its factorization.

12031330111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 12031330111 its reverse (11103313021), we get a palindrome (23134643132).

The spelling of 12031330111 in words is "twelve billion, thirty-one million, three hundred thirty thousand, one hundred eleven".