13310221 has 2 divisors, whose sum is σ = 13310222. Its totient is φ = 13310220.

The previous prime is 13310207. The next prime is 13310233. The reversal of 13310221 is 12201331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7502121 + 5808100 = 2739^2 + 2410^2 .

It is an emirp because it is prime and its reverse (12201331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13310221 - 2⁷ = 13310093 is a prime.

It is a super-3 number, since 3×13310221³ (a number of 22 digits) contains 333 as substring.

It is a pancake number, because a pancake can be divided into 13310221 parts by 5159 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13310251) 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, 6655110 + 6655111.

It is an arithmetic number, because the mean of its divisors is an integer number (6655111).

Almost surely, 2^13310221 is an apocalyptic number.

It is an amenable number.

13310221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13310221 is an equidigital number, since it uses as much as digits as its factorization.

13310221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13310221 is about 3648.3175574503. The cubic root of 13310221 is about 236.9891275493.

Adding to 13310221 its reverse (12201331), we get a palindrome (25511552).

It can be divided in two parts, 13310 and 221, that added together give a palindrome (13531).

The spelling of 13310221 in words is "thirteen million, three hundred ten thousand, two hundred twenty-one".