222112202321 has 2 divisors, whose sum is σ = 222112202322. Its totient is φ = 222112202320.

The previous prime is 222112202317. The next prime is 222112202329. The reversal of 222112202321 is 123202211222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166717872721 + 55394329600 = 408311^2 + 235360^2 .

It is a cyclic number.

It is not a de Polignac number, because 222112202321 - 2² = 222112202317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222112202293 and 222112202302.

It is not a weakly prime, because it can be changed into another prime (222112202329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111056101160 + 111056101161.

It is an arithmetic number, because the mean of its divisors is an integer number (111056101161).

Almost surely, 2^222112202321 is an apocalyptic number.

It is an amenable number.

222112202321 is a deficient number, since it is larger than the sum of its proper divisors (1).

222112202321 is an equidigital number, since it uses as much as digits as its factorization.

222112202321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 222112202321 its reverse (123202211222), we get a palindrome (345314413543).

The spelling of 222112202321 in words is "two hundred twenty-two billion, one hundred twelve million, two hundred two thousand, three hundred twenty-one".