13001023220221 has 2 divisors, whose sum is σ = 13001023220222. Its totient is φ = 13001023220220.

The previous prime is 13001023220189. The next prime is 13001023220287. The reversal of 13001023220221 is 12202232010031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9796962600100 + 3204060620121 = 3130010^2 + 1789989^2 .

It is a cyclic number.

It is not a de Polignac number, because 13001023220221 - 2⁵ = 13001023220189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13001023220291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6500511610110 + 6500511610111.

It is an arithmetic number, because the mean of its divisors is an integer number (6500511610111).

Almost surely, 2^{13001023220221} is an apocalyptic number.

It is an amenable number.

13001023220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13001023220221 is an equidigital number, since it uses as much as digits as its factorization.

13001023220221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13001023220221 its reverse (12202232010031), we get a palindrome (25203255230252).

The spelling of 13001023220221 in words is "thirteen trillion, one billion, twenty-three million, two hundred twenty thousand, two hundred twenty-one".