13221212311 has 2 divisors, whose sum is σ = 13221212312. Its totient is φ = 13221212310.

The previous prime is 13221212297. The next prime is 13221212321. The reversal of 13221212311 is 11321212231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13221212311 - 2¹³ = 13221204119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13221212321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610606155 + 6610606156.

It is an arithmetic number, because the mean of its divisors is an integer number (6610606156).

Almost surely, 2^13221212311 is an apocalyptic number.

13221212311 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221212311 is an equidigital number, since it uses as much as digits as its factorization.

13221212311 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 13221212311 its reverse (11321212231), we get a palindrome (24542424542).

The spelling of 13221212311 in words is "thirteen billion, two hundred twenty-one million, two hundred twelve thousand, three hundred eleven".