242051213221 has 2 divisors, whose sum is σ = 242051213222. Its totient is φ = 242051213220.

The previous prime is 242051213177. The next prime is 242051213267. The reversal of 242051213221 is 122312150242.

242051213221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169652548321 + 72398664900 = 411889^2 + 269070^2 .

It is a cyclic number.

It is not a de Polignac number, because 242051213221 - 2¹¹ = 242051211173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242051213281) 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, 121025606610 + 121025606611.

It is an arithmetic number, because the mean of its divisors is an integer number (121025606611).

Almost surely, 2^242051213221 is an apocalyptic number.

It is an amenable number.

242051213221 is a deficient number, since it is larger than the sum of its proper divisors (1).

242051213221 is an equidigital number, since it uses as much as digits as its factorization.

242051213221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 242051213221 its reverse (122312150242), we get a palindrome (364363363463).

The spelling of 242051213221 in words is "two hundred forty-two billion, fifty-one million, two hundred thirteen thousand, two hundred twenty-one".