220213321 has 4 divisors (see below), whose sum is σ = 220562944. Its totient is φ = 219863700.

The previous prime is 220213313. The next prime is 220213349. The reversal of 220213321 is 123312022.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123312022 = 2 ⋅61656011.

It is a cyclic number.

It is not a de Polignac number, because 220213321 - 2³ = 220213313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220213295 and 220213304.

It is not an unprimeable number, because it can be changed into a prime (220213361) 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, 173865 + ... + 175126.

It is an arithmetic number, because the mean of its divisors is an integer number (55140736).

Almost surely, 2^220213321 is an apocalyptic number.

It is an amenable number.

220213321 is a deficient number, since it is larger than the sum of its proper divisors (349623).

220213321 is an equidigital number, since it uses as much as digits as its factorization.

220213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349622.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 220213321 is about 14839.5862812950. The cubic root of 220213321 is about 603.8761286040.

Adding to 220213321 its reverse (123312022), we get a palindrome (343525343).

The spelling of 220213321 in words is "two hundred twenty million, two hundred thirteen thousand, three hundred twenty-one".