7173104221 has 2 divisors, whose sum is σ = 7173104222. Its totient is φ = 7173104220.

The previous prime is 7173104179. The next prime is 7173104243. The reversal of 7173104221 is 1224013717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6397760196 + 775344025 = 79986^2 + 27845^2 .

It is a cyclic number.

It is not a de Polignac number, because 7173104221 - 2¹⁵ = 7173071453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7173104221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7173104261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3586552110 + 3586552111.

It is an arithmetic number, because the mean of its divisors is an integer number (3586552111).

Almost surely, 2^7173104221 is an apocalyptic number.

It is an amenable number.

7173104221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7173104221 is an equidigital number, since it uses as much as digits as its factorization.

7173104221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 7173104221 is about 84694.1805615947. The cubic root of 7173104221 is about 1928.5713626763.

Adding to 7173104221 its reverse (1224013717), we get a palindrome (8397117938).

The spelling of 7173104221 in words is "seven billion, one hundred seventy-three million, one hundred four thousand, two hundred twenty-one".