220563603221 has 8 divisors (see below), whose sum is σ = 238760762520. Its totient is φ = 202542262272.

The previous prime is 220563603199. The next prime is 220563603223. The reversal of 220563603221 is 122306365022.

It can be written as a sum of positive squares in 4 ways, for example, as 2488612996 + 218074990225 = 49886^2 + 466985^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220563603221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220563603223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43951976 + ... + 43956993.

It is an arithmetic number, because the mean of its divisors is an integer number (29845095315).

Almost surely, 2^220563603221 is an apocalyptic number.

It is an amenable number.

220563603221 is a deficient number, since it is larger than the sum of its proper divisors (18197159299).

220563603221 is a wasteful number, since it uses less digits than its factorization.

220563603221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87909175.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 220563603221 its reverse (122306365022), we get a palindrome (342869968243).

The spelling of 220563603221 in words is "two hundred twenty billion, five hundred sixty-three million, six hundred three thousand, two hundred twenty-one".