523221341252321 has 2 divisors, whose sum is σ = 523221341252322. Its totient is φ = 523221341252320.

The previous prime is 523221341252263. The next prime is 523221341252353. The reversal of 523221341252321 is 123252143122325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481694336471296 + 41527004781025 = 21947536^2 + 6444145^2 .

It is a cyclic number.

It is not a de Polignac number, because 523221341252321 - 2³⁸ = 522946463345377 is a prime.

It is not a weakly prime, because it can be changed into another prime (523221341252381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261610670626160 + 261610670626161.

It is an arithmetic number, because the mean of its divisors is an integer number (261610670626161).

Almost surely, 2^{523221341252321} is an apocalyptic number.

It is an amenable number.

523221341252321 is a deficient number, since it is larger than the sum of its proper divisors (1).

523221341252321 is an equidigital number, since it uses as much as digits as its factorization.

523221341252321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 38.

Adding to 523221341252321 its reverse (123252143122325), we get a palindrome (646473484374646).

The spelling of 523221341252321 in words is "five hundred twenty-three trillion, two hundred twenty-one billion, three hundred forty-one million, two hundred fifty-two thousand, three hundred twenty-one".