4223322221 has 2 divisors, whose sum is σ = 4223322222. Its totient is φ = 4223322220.

The previous prime is 4223322199. The next prime is 4223322253. The reversal of 4223322221 is 1222233224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3037552996 + 1185769225 = 55114^2 + 34435^2 .

It is a cyclic number.

It is not a de Polignac number, because 4223322221 - 2⁶ = 4223322157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4223322821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111661110 + 2111661111.

It is an arithmetic number, because the mean of its divisors is an integer number (2111661111).

Almost surely, 2^4223322221 is an apocalyptic number.

It is an amenable number.

4223322221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4223322221 is an equidigital number, since it uses as much as digits as its factorization.

4223322221 is an evil number, because the sum of its binary digits is even.

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

The square root of 4223322221 is about 64987.0927261714. The cubic root of 4223322221 is about 1616.4095431562.

Adding to 4223322221 its reverse (1222233224), we get a palindrome (5445555445).

The spelling of 4223322221 in words is "four billion, two hundred twenty-three million, three hundred twenty-two thousand, two hundred twenty-one".