13020210221 has 2 divisors, whose sum is σ = 13020210222. Its totient is φ = 13020210220.

The previous prime is 13020210163. The next prime is 13020210311. The reversal of 13020210221 is 12201202031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12659400196 + 360810025 = 112514^2 + 18995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13020210221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13020210196 and 13020210205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13020219221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510105110 + 6510105111.

It is an arithmetic number, because the mean of its divisors is an integer number (6510105111).

Almost surely, 2^13020210221 is an apocalyptic number.

It is an amenable number.

13020210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020210221 is an equidigital number, since it uses as much as digits as its factorization.

13020210221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 13020210221 its reverse (12201202031), we get a palindrome (25221412252).

The spelling of 13020210221 in words is "thirteen billion, twenty million, two hundred ten thousand, two hundred twenty-one".