12011212112311 has 2 divisors, whose sum is σ = 12011212112312. Its totient is φ = 12011212112310.

The previous prime is 12011212112239. The next prime is 12011212112323. The reversal of 12011212112311 is 11321121211021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12011212112311 - 2²⁹ = 12010675241399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011212112351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005606056155 + 6005606056156.

It is an arithmetic number, because the mean of its divisors is an integer number (6005606056156).

Almost surely, 2^{12011212112311} is an apocalyptic number.

12011212112311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011212112311 is an equidigital number, since it uses as much as digits as its factorization.

12011212112311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 12011212112311 its reverse (11321121211021), we get a palindrome (23332333323332).

The spelling of 12011212112311 in words is "twelve trillion, eleven billion, two hundred twelve million, one hundred twelve thousand, three hundred eleven".