220320332021 has 4 divisors (see below), whose sum is σ = 220322480544. Its totient is φ = 220318183500.

The previous prime is 220320332017. The next prime is 220320332039. The reversal of 220320332021 is 120233023022.

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 a cyclic number.

It is not a de Polignac number, because 220320332021 - 2² = 220320332017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220320331984 and 220320332002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220320332051) 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, 912305 + ... + 1128246.

It is an arithmetic number, because the mean of its divisors is an integer number (55080620136).

Almost surely, 2^220320332021 is an apocalyptic number.

It is an amenable number.

220320332021 is a deficient number, since it is larger than the sum of its proper divisors (2148523).

220320332021 is a wasteful number, since it uses less digits than its factorization.

220320332021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148522.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 220320332021 its reverse (120233023022), we get a palindrome (340553355043).

The spelling of 220320332021 in words is "two hundred twenty billion, three hundred twenty million, three hundred thirty-two thousand, twenty-one".