2221603073 has 2 divisors, whose sum is σ = 2221603074. Its totient is φ = 2221603072.

The previous prime is 2221603039. The next prime is 2221603093. The reversal of 2221603073 is 3703061222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1698428944 + 523174129 = 41212^2 + 22873^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221603073 - 2⁶ = 2221603009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221603093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110801536 + 1110801537.

It is an arithmetic number, because the mean of its divisors is an integer number (1110801537).

Almost surely, 2^2221603073 is an apocalyptic number.

It is an amenable number.

2221603073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221603073 is an equidigital number, since it uses as much as digits as its factorization.

2221603073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 2221603073 is about 47133.8845524109. The cubic root of 2221603073 is about 1304.8346747695.

Adding to 2221603073 its reverse (3703061222), we get a palindrome (5924664295).

The spelling of 2221603073 in words is "two billion, two hundred twenty-one million, six hundred three thousand, seventy-three".