4333541221 has 2 divisors, whose sum is σ = 4333541222. Its totient is φ = 4333541220.

The previous prime is 4333541197. The next prime is 4333541227. The reversal of 4333541221 is 1221453334.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4161669121 + 171872100 = 64511^2 + 13110^2 .

It is a cyclic number.

It is not a de Polignac number, because 4333541221 - 2⁵ = 4333541189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4333541221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4333541227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2166770610 + 2166770611.

It is an arithmetic number, because the mean of its divisors is an integer number (2166770611).

Almost surely, 2^4333541221 is an apocalyptic number.

It is an amenable number.

4333541221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4333541221 is an equidigital number, since it uses as much as digits as its factorization.

4333541221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 28.

The square root of 4333541221 is about 65829.6378616805. The cubic root of 4333541221 is about 1630.3504861890.

Adding to 4333541221 its reverse (1221453334), we get a palindrome (5554994555).

The spelling of 4333541221 in words is "four billion, three hundred thirty-three million, five hundred forty-one thousand, two hundred twenty-one".