241221502505513 has 2 divisors, whose sum is σ = 241221502505514. Its totient is φ = 241221502505512.

The previous prime is 241221502505483. The next prime is 241221502505527. The reversal of 241221502505513 is 315505205122142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162783609134224 + 78437893371289 = 12758668^2 + 8856517^2 .

It is a cyclic number.

It is not a de Polignac number, because 241221502505513 - 2¹⁴ = 241221502489129 is a prime.

It is not a weakly prime, because it can be changed into another prime (241221502505813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120610751252756 + 120610751252757.

It is an arithmetic number, because the mean of its divisors is an integer number (120610751252757).

Almost surely, 2^{241221502505513} is an apocalyptic number.

It is an amenable number.

241221502505513 is a deficient number, since it is larger than the sum of its proper divisors (1).

241221502505513 is an equidigital number, since it uses as much as digits as its factorization.

241221502505513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120000, while the sum is 38.

Adding to 241221502505513 its reverse (315505205122142), we get a palindrome (556726707627655).

The spelling of 241221502505513 in words is "two hundred forty-one trillion, two hundred twenty-one billion, five hundred two million, five hundred five thousand, five hundred thirteen".