13122033213221 has 2 divisors, whose sum is σ = 13122033213222. Its totient is φ = 13122033213220.

The previous prime is 13122033213167. The next prime is 13122033213239. The reversal of 13122033213221 is 12231233022131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12000065020321 + 1121968192900 = 3464111^2 + 1059230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13122033213221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13122033213251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561016606610 + 6561016606611.

It is an arithmetic number, because the mean of its divisors is an integer number (6561016606611).

Almost surely, 2^{13122033213221} is an apocalyptic number.

It is an amenable number.

13122033213221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122033213221 is an equidigital number, since it uses as much as digits as its factorization.

13122033213221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 13122033213221 its reverse (12231233022131), we get a palindrome (25353266235352).

The spelling of 13122033213221 in words is "thirteen trillion, one hundred twenty-two billion, thirty-three million, two hundred thirteen thousand, two hundred twenty-one".