4423220223209 has 2 divisors, whose sum is σ = 4423220223210. Its totient is φ = 4423220223208.

The previous prime is 4423220223197. The next prime is 4423220223211. The reversal of 4423220223209 is 9023220223244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4334578261225 + 88641961984 = 2081965^2 + 297728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4423220223209 is a prime.

Together with 4423220223211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4423220223259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211610111604 + 2211610111605.

It is an arithmetic number, because the mean of its divisors is an integer number (2211610111605).

Almost surely, 2^{4423220223209} is an apocalyptic number.

It is an amenable number.

4423220223209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4423220223209 is an equidigital number, since it uses as much as digits as its factorization.

4423220223209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 4423220223209 its sum of digits (35), we get a palindrome (4423220223244).

The spelling of 4423220223209 in words is "four trillion, four hundred twenty-three billion, two hundred twenty million, two hundred twenty-three thousand, two hundred nine".