4353242221 has 2 divisors, whose sum is σ = 4353242222. Its totient is φ = 4353242220.

The previous prime is 4353242191. The next prime is 4353242237. The reversal of 4353242221 is 1222423534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2551664196 + 1801578025 = 50514^2 + 42445^2 .

It is a cyclic number.

It is not a de Polignac number, because 4353242221 - 2⁵ = 4353242189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4353242221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4353242261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2176621110 + 2176621111.

It is an arithmetic number, because the mean of its divisors is an integer number (2176621111).

Almost surely, 2^4353242221 is an apocalyptic number.

It is an amenable number.

4353242221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4353242221 is an equidigital number, since it uses as much as digits as its factorization.

4353242221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 28.

The square root of 4353242221 is about 65979.1044270836. The cubic root of 4353242221 is about 1632.8173666046.

Adding to 4353242221 its reverse (1222423534), we get a palindrome (5575665755).

The spelling of 4353242221 in words is "four billion, three hundred fifty-three million, two hundred forty-two thousand, two hundred twenty-one".