242204351021 has 2 divisors, whose sum is σ = 242204351022. Its totient is φ = 242204351020.

The previous prime is 242204350957. The next prime is 242204351071. The reversal of 242204351021 is 120153402242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163285495396 + 78918855625 = 404086^2 + 280925^2 .

It is a cyclic number.

It is not a de Polignac number, because 242204351021 - 2⁶ = 242204350957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242204351071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121102175510 + 121102175511.

It is an arithmetic number, because the mean of its divisors is an integer number (121102175511).

Almost surely, 2^242204351021 is an apocalyptic number.

It is an amenable number.

242204351021 is a deficient number, since it is larger than the sum of its proper divisors (1).

242204351021 is an equidigital number, since it uses as much as digits as its factorization.

242204351021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 242204351021 its reverse (120153402242), we get a palindrome (362357753263).

The spelling of 242204351021 in words is "two hundred forty-two billion, two hundred four million, three hundred fifty-one thousand, twenty-one".