7324445221 has 2 divisors, whose sum is σ = 7324445222. Its totient is φ = 7324445220.

The previous prime is 7324445209. The next prime is 7324445231. The reversal of 7324445221 is 1225444237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6684861121 + 639584100 = 81761^2 + 25290^2 .

It is a cyclic number.

It is not a de Polignac number, because 7324445221 - 2¹⁷ = 7324314149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7324445231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3662222610 + 3662222611.

It is an arithmetic number, because the mean of its divisors is an integer number (3662222611).

Almost surely, 2^7324445221 is an apocalyptic number.

It is an amenable number.

7324445221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7324445221 is an equidigital number, since it uses as much as digits as its factorization.

7324445221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 34.

The square root of 7324445221 is about 85582.9727282244. The cubic root of 7324445221 is about 1942.0403323150.

Adding to 7324445221 its reverse (1225444237), we get a palindrome (8549889458).

The spelling of 7324445221 in words is "seven billion, three hundred twenty-four million, four hundred forty-five thousand, two hundred twenty-one".