222112020105221 has 2 divisors, whose sum is σ = 222112020105222. Its totient is φ = 222112020105220.

The previous prime is 222112020105197. The next prime is 222112020105259. The reversal of 222112020105221 is 122501020211222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199288841980900 + 22823178124321 = 14116970^2 + 4777361^2 .

It is a cyclic number.

It is not a de Polignac number, because 222112020105221 - 2¹⁰ = 222112020104197 is a prime.

It is a super-2 number, since 2×222112020105221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222112020105721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111056010052610 + 111056010052611.

It is an arithmetic number, because the mean of its divisors is an integer number (111056010052611).

Almost surely, 2^{222112020105221} is an apocalyptic number.

It is an amenable number.

222112020105221 is a deficient number, since it is larger than the sum of its proper divisors (1).

222112020105221 is an equidigital number, since it uses as much as digits as its factorization.

222112020105221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 222112020105221 its reverse (122501020211222), we get a palindrome (344613040316443).

The spelling of 222112020105221 in words is "two hundred twenty-two trillion, one hundred twelve billion, twenty million, one hundred five thousand, two hundred twenty-one".