4365423221 has 2 divisors, whose sum is σ = 4365423222. Its totient is φ = 4365423220.

The previous prime is 4365423187. The next prime is 4365423241. The reversal of 4365423221 is 1223245634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3132640900 + 1232782321 = 55970^2 + 35111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4365423221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4365423241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2182711610 + 2182711611.

It is an arithmetic number, because the mean of its divisors is an integer number (2182711611).

Almost surely, 2^4365423221 is an apocalyptic number.

It is an amenable number.

4365423221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4365423221 is an equidigital number, since it uses as much as digits as its factorization.

4365423221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 32.

The square root of 4365423221 is about 66071.3494716129. The cubic root of 4365423221 is about 1634.3389012087.

Adding to 4365423221 its reverse (1223245634), we get a palindrome (5588668855).

The spelling of 4365423221 in words is "four billion, three hundred sixty-five million, four hundred twenty-three thousand, two hundred twenty-one".