242122254217 has 2 divisors, whose sum is σ = 242122254218. Its totient is φ = 242122254216.

The previous prime is 242122254169. The next prime is 242122254223. The reversal of 242122254217 is 712452221242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125947621881 + 116174632336 = 354891^2 + 340844^2 .

It is a cyclic number.

It is not a de Polignac number, because 242122254217 - 2³¹ = 239974770569 is a prime.

It is not a weakly prime, because it can be changed into another prime (242122254277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121061127108 + 121061127109.

It is an arithmetic number, because the mean of its divisors is an integer number (121061127109).

Almost surely, 2^242122254217 is an apocalyptic number.

It is an amenable number.

242122254217 is a deficient number, since it is larger than the sum of its proper divisors (1).

242122254217 is an equidigital number, since it uses as much as digits as its factorization.

242122254217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 34.

Adding to 242122254217 its reverse (712452221242), we get a palindrome (954574475459).

The spelling of 242122254217 in words is "two hundred forty-two billion, one hundred twenty-two million, two hundred fifty-four thousand, two hundred seventeen".