220044321 has 24 divisors (see below), whose sum is σ = 364440960. Its totient is φ = 125326656.

The previous prime is 220044313. The next prime is 220044337. The reversal of 220044321 is 123440022.

220044321 is a `hidden beast` number, since 2 + 200 + 443 + 21 = 666.

It is not a de Polignac number, because 220044321 - 2³ = 220044313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220044294 and 220044303.

It is not an unprimeable number, because it can be changed into a prime (220044361) 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 23 ways as a sum of consecutive naturals, for example, 14140 + ... + 25298.

It is an arithmetic number, because the mean of its divisors is an integer number (15185040).

Almost surely, 2^220044321 is an apocalyptic number.

220044321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220044321 is a deficient number, since it is larger than the sum of its proper divisors (144396639).

220044321 is a wasteful number, since it uses less digits than its factorization.

220044321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11485 (or 11482 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 220044321 is about 14833.8909595561. The cubic root of 220044321 is about 603.7216099712.

Adding to 220044321 its reverse (123440022), we get a palindrome (343484343).

The spelling of 220044321 in words is "two hundred twenty million, forty-four thousand, three hundred twenty-one".