14224142312221 has 2 divisors, whose sum is σ = 14224142312222. Its totient is φ = 14224142312220.

The previous prime is 14224142312201. The next prime is 14224142312239. The reversal of 14224142312221 is 12221324142241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8730340731225 + 5493801580996 = 2954715^2 + 2343886^2 .

It is a cyclic number.

It is not a de Polignac number, because 14224142312221 - 2¹⁵ = 14224142279453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14224142312201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7112071156110 + 7112071156111.

It is an arithmetic number, because the mean of its divisors is an integer number (7112071156111).

Almost surely, 2^{14224142312221} is an apocalyptic number.

It is an amenable number.

14224142312221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14224142312221 is an equidigital number, since it uses as much as digits as its factorization.

14224142312221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12288, while the sum is 31.

Adding to 14224142312221 its reverse (12221324142241), we get a palindrome (26445466454462).

The spelling of 14224142312221 in words is "fourteen trillion, two hundred twenty-four billion, one hundred forty-two million, three hundred twelve thousand, two hundred twenty-one".