242616120221 has 2 divisors, whose sum is σ = 242616120222. Its totient is φ = 242616120220.

The previous prime is 242616120209. The next prime is 242616120251. The reversal of 242616120221 is 122021616242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205757496025 + 36858624196 = 453605^2 + 191986^2 .

It is a cyclic number.

It is not a de Polignac number, because 242616120221 - 2¹⁸ = 242615858077 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 (242616120251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121308060110 + 121308060111.

It is an arithmetic number, because the mean of its divisors is an integer number (121308060111).

Almost surely, 2^242616120221 is an apocalyptic number.

It is an amenable number.

242616120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

242616120221 is an equidigital number, since it uses as much as digits as its factorization.

242616120221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 242616120221 its reverse (122021616242), we get a palindrome (364637736463).

The spelling of 242616120221 in words is "two hundred forty-two billion, six hundred sixteen million, one hundred twenty thousand, two hundred twenty-one".