13221233111 has 2 divisors, whose sum is σ = 13221233112. Its totient is φ = 13221233110.

The previous prime is 13221233089. The next prime is 13221233131. The reversal of 13221233111 is 11133212231.

It is a happy number.

It is an a-pointer prime, because the next prime (13221233131) can be obtained adding 13221233111 to its sum of digits (20).

It is a strong prime.

It is an emirp because it is prime and its reverse (11133212231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13221233111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13221233131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610616555 + 6610616556.

It is an arithmetic number, because the mean of its divisors is an integer number (6610616556).

Almost surely, 2^13221233111 is an apocalyptic number.

13221233111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221233111 is an equidigital number, since it uses as much as digits as its factorization.

13221233111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

Adding to 13221233111 its reverse (11133212231), we get a palindrome (24354445342).

The spelling of 13221233111 in words is "thirteen billion, two hundred twenty-one million, two hundred thirty-three thousand, one hundred eleven".