13321221211 has 2 divisors, whose sum is σ = 13321221212. Its totient is φ = 13321221210.

The previous prime is 13321221149. The next prime is 13321221217. The reversal of 13321221211 is 11212212331.

It is a strong prime.

It is an emirp because it is prime and its reverse (11212212331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13321221211 - 2⁹ = 13321220699 is a prime.

It is not a weakly prime, because it can be changed into another prime (13321221217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660610605 + 6660610606.

It is an arithmetic number, because the mean of its divisors is an integer number (6660610606).

Almost surely, 2^13321221211 is an apocalyptic number.

13321221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321221211 is an equidigital number, since it uses as much as digits as its factorization.

13321221211 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 13321221211 its reverse (11212212331), we get a palindrome (24533433542).

The spelling of 13321221211 in words is "thirteen billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".