220313320221 has 4 divisors (see below), whose sum is σ = 293751093632. Its totient is φ = 146875546812.

The previous prime is 220313320211. The next prime is 220313320229. The reversal of 220313320221 is 122023313022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 220313320221 - 2⁷ = 220313320093 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 (220313320229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36718886701 + ... + 36718886706.

It is an arithmetic number, because the mean of its divisors is an integer number (73437773408).

Almost surely, 2^220313320221 is an apocalyptic number.

It is an amenable number.

220313320221 is a deficient number, since it is larger than the sum of its proper divisors (73437773411).

220313320221 is an equidigital number, since it uses as much as digits as its factorization.

220313320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73437773410.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 220313320221 its reverse (122023313022), we get a palindrome (342336633243).

The spelling of 220313320221 in words is "two hundred twenty billion, three hundred thirteen million, three hundred twenty thousand, two hundred twenty-one".