222230043221 has 2 divisors, whose sum is σ = 222230043222. Its totient is φ = 222230043220.

The previous prime is 222230043209. The next prime is 222230043223. The reversal of 222230043221 is 122340032222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165230868196 + 56999175025 = 406486^2 + 238745^2 .

It is a cyclic number.

It is not a de Polignac number, because 222230043221 - 2¹⁰ = 222230042197 is a prime.

It is a super-2 number, since 2×222230043221² (a number of 23 digits) contains 22 as substring.

Together with 222230043223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222230043223) 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, 111115021610 + 111115021611.

It is an arithmetic number, because the mean of its divisors is an integer number (111115021611).

Almost surely, 2^222230043221 is an apocalyptic number.

It is an amenable number.

222230043221 is a deficient number, since it is larger than the sum of its proper divisors (1).

222230043221 is an equidigital number, since it uses as much as digits as its factorization.

222230043221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 222230043221 its reverse (122340032222), we get a palindrome (344570075443).

The spelling of 222230043221 in words is "two hundred twenty-two billion, two hundred thirty million, forty-three thousand, two hundred twenty-one".