220220730305 has 8 divisors (see below), whose sum is σ = 264278553000. Its totient is φ = 176167466496.

The previous prime is 220220730293. The next prime is 220220730343. The reversal of 220220730305 is 503037022022.

220220730305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25128907441 + 195091822864 = 158521^2 + 441692^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220220730305 - 2⁶ = 220220730241 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032530 + ... + 1227419.

It is an arithmetic number, because the mean of its divisors is an integer number (33034819125).

Almost surely, 2^220220730305 is an apocalyptic number.

It is an amenable number.

220220730305 is a deficient number, since it is larger than the sum of its proper divisors (44057822695).

220220730305 is a wasteful number, since it uses less digits than its factorization.

220220730305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279443.

The product of its (nonzero) digits is 5040, while the sum is 26.

Adding to 220220730305 its reverse (503037022022), we get a palindrome (723257752327).

The spelling of 220220730305 in words is "two hundred twenty billion, two hundred twenty million, seven hundred thirty thousand, three hundred five".