13302221 has 2 divisors, whose sum is σ = 13302222. Its totient is φ = 13302220.

The previous prime is 13302217. The next prime is 13302227. The reversal of 13302221 is 12220331.

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., 8934121 + 4368100 = 2989^2 + 2090^2 .

It is a cyclic number.

It is not a de Polignac number, because 13302221 - 2² = 13302217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13302196 and 13302205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13302227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6651110 + 6651111.

It is an arithmetic number, because the mean of its divisors is an integer number (6651111).

Almost surely, 2^13302221 is an apocalyptic number.

It is an amenable number.

13302221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13302221 is an equidigital number, since it uses as much as digits as its factorization.

13302221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 13302221 is about 3647.2209968687. The cubic root of 13302221 is about 236.9416379049.

Adding to 13302221 its reverse (12220331), we get a palindrome (25522552).

The spelling of 13302221 in words is "thirteen million, three hundred two thousand, two hundred twenty-one".