224562331631221 has 2 divisors, whose sum is σ = 224562331631222. Its totient is φ = 224562331631220.

The previous prime is 224562331631149. The next prime is 224562331631299. The reversal of 224562331631221 is 122136133265422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121096511236996 + 103465820394225 = 11004386^2 + 10171815^2 .

It is a cyclic number.

It is not a de Polignac number, because 224562331631221 - 2⁴¹ = 222363308375669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224562331631821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112281165815610 + 112281165815611.

It is an arithmetic number, because the mean of its divisors is an integer number (112281165815611).

Almost surely, 2^{224562331631221} is an apocalyptic number.

It is an amenable number.

224562331631221 is a deficient number, since it is larger than the sum of its proper divisors (1).

224562331631221 is an equidigital number, since it uses as much as digits as its factorization.

224562331631221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 43.

Adding to 224562331631221 its reverse (122136133265422), we get a palindrome (346698464896643).

The spelling of 224562331631221 in words is "two hundred twenty-four trillion, five hundred sixty-two billion, three hundred thirty-one million, six hundred thirty-one thousand, two hundred twenty-one".