13214412023221 has 2 divisors, whose sum is σ = 13214412023222. Its totient is φ = 13214412023220.

The previous prime is 13214412023149. The next prime is 13214412023227. The reversal of 13214412023221 is 12232021441231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11500305264100 + 1714106759121 = 3391210^2 + 1309239^2 .

It is a cyclic number.

It is not a de Polignac number, because 13214412023221 - 2¹⁵ = 13214411990453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13214412023221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13214412023227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6607206011610 + 6607206011611.

It is an arithmetic number, because the mean of its divisors is an integer number (6607206011611).

Almost surely, 2^{13214412023221} is an apocalyptic number.

It is an amenable number.

13214412023221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13214412023221 is an equidigital number, since it uses as much as digits as its factorization.

13214412023221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 13214412023221 its reverse (12232021441231), we get a palindrome (25446433464452).

The spelling of 13214412023221 in words is "thirteen trillion, two hundred fourteen billion, four hundred twelve million, twenty-three thousand, two hundred twenty-one".