4543202221 has 2 divisors, whose sum is σ = 4543202222. Its totient is φ = 4543202220.

The previous prime is 4543202203. The next prime is 4543202269. The reversal of 4543202221 is 1222023454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3743726596 + 799475625 = 61186^2 + 28275^2 .

It is a cyclic number.

It is not a de Polignac number, because 4543202221 - 2⁷ = 4543202093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4543202021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271601110 + 2271601111.

It is an arithmetic number, because the mean of its divisors is an integer number (2271601111).

Almost surely, 2^4543202221 is an apocalyptic number.

It is an amenable number.

4543202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4543202221 is an equidigital number, since it uses as much as digits as its factorization.

4543202221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 4543202221 is about 67403.2804913826. The cubic root of 4543202221 is about 1656.2301616591.

Adding to 4543202221 its reverse (1222023454), we get a palindrome (5765225675).

The spelling of 4543202221 in words is "four billion, five hundred forty-three million, two hundred two thousand, two hundred twenty-one".