13333020221 has 2 divisors, whose sum is σ = 13333020222. Its totient is φ = 13333020220.

The previous prime is 13333020209. The next prime is 13333020229. The reversal of 13333020221 is 12202033331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13267814596 + 65205625 = 115186^2 + 8075^2 .

It is a cyclic number.

It is not a de Polignac number, because 13333020221 - 2¹⁰ = 13333019197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13333020193 and 13333020202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13333020229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6666510110 + 6666510111.

It is an arithmetic number, because the mean of its divisors is an integer number (6666510111).

Almost surely, 2^13333020221 is an apocalyptic number.

It is an amenable number.

13333020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13333020221 is an equidigital number, since it uses as much as digits as its factorization.

13333020221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13333020221 its reverse (12202033331), we get a palindrome (25535053552).

The spelling of 13333020221 in words is "thirteen billion, three hundred thirty-three million, twenty thousand, two hundred twenty-one".