4430232221 has 2 divisors, whose sum is σ = 4430232222. Its totient is φ = 4430232220.

The previous prime is 4430232217. The next prime is 4430232271. The reversal of 4430232221 is 1222320344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4394364100 + 35868121 = 66290^2 + 5989^2 .

It is a cyclic number.

It is not a de Polignac number, because 4430232221 - 2² = 4430232217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4430232271) 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, 2215116110 + 2215116111.

It is an arithmetic number, because the mean of its divisors is an integer number (2215116111).

Almost surely, 2^4430232221 is an apocalyptic number.

It is an amenable number.

4430232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4430232221 is an equidigital number, since it uses as much as digits as its factorization.

4430232221 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.

The square root of 4430232221 is about 66559.9896409247. The cubic root of 4430232221 is about 1642.3869936700.

Adding to 4430232221 its reverse (1222320344), we get a palindrome (5652552565).

The spelling of 4430232221 in words is "four billion, four hundred thirty million, two hundred thirty-two thousand, two hundred twenty-one".