220301221 has 16 divisors (see below), whose sum is σ = 264314880. Its totient is φ = 179630640.

The previous prime is 220301209. The next prime is 220301243. The reversal of 220301221 is 122103022.

It is not a de Polignac number, because 220301221 - 2⁷ = 220301093 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 (220301251) 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 in 15 ways as a sum of consecutive naturals, for example, 4200 + ... + 21406.

It is an arithmetic number, because the mean of its divisors is an integer number (16519680).

Almost surely, 2^220301221 is an apocalyptic number.

It is an amenable number.

220301221 is a deficient number, since it is larger than the sum of its proper divisors (44013659).

220301221 is a wasteful number, since it uses less digits than its factorization.

220301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17304.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 220301221 is about 14842.5476586737. The cubic root of 220301221 is about 603.9564653285.

Adding to 220301221 its reverse (122103022), we get a palindrome (342404243).

The spelling of 220301221 in words is "two hundred twenty million, three hundred one thousand, two hundred twenty-one".