242305413221 has 2 divisors, whose sum is σ = 242305413222. Its totient is φ = 242305413220.

The previous prime is 242305413211. The next prime is 242305413263. The reversal of 242305413221 is 122314503242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232431016321 + 9874396900 = 482111^2 + 99370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242305413221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242305413211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121152706610 + 121152706611.

It is an arithmetic number, because the mean of its divisors is an integer number (121152706611).

Almost surely, 2^242305413221 is an apocalyptic number.

It is an amenable number.

242305413221 is a deficient number, since it is larger than the sum of its proper divisors (1).

242305413221 is an equidigital number, since it uses as much as digits as its factorization.

242305413221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 242305413221 its reverse (122314503242), we get a palindrome (364619916463).

The spelling of 242305413221 in words is "two hundred forty-two billion, three hundred five million, four hundred thirteen thousand, two hundred twenty-one".