13242332221 has 2 divisors, whose sum is σ = 13242332222. Its totient is φ = 13242332220.

The previous prime is 13242332197. The next prime is 13242332251. The reversal of 13242332221 is 12223324231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7487440900 + 5754891321 = 86530^2 + 75861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13242332221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13242332251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6621166110 + 6621166111.

It is an arithmetic number, because the mean of its divisors is an integer number (6621166111).

Almost surely, 2^13242332221 is an apocalyptic number.

It is an amenable number.

13242332221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13242332221 is an equidigital number, since it uses as much as digits as its factorization.

13242332221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 25.

Adding to 13242332221 its reverse (12223324231), we get a palindrome (25465656452).

The spelling of 13242332221 in words is "thirteen billion, two hundred forty-two million, three hundred thirty-two thousand, two hundred twenty-one".