320004478221 has 8 divisors (see below), whose sum is σ = 449129092320. Its totient is φ = 202108091472.

The previous prime is 320004478201. The next prime is 320004478223. The reversal of 320004478221 is 122874400023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320004478221 - 2¹³ = 320004470029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320004478223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2807056770 + ... + 2807056883.

It is an arithmetic number, because the mean of its divisors is an integer number (56141136540).

Almost surely, 2^320004478221 is an apocalyptic number.

It is an amenable number.

320004478221 is a deficient number, since it is larger than the sum of its proper divisors (129124614099).

320004478221 is a wasteful number, since it uses less digits than its factorization.

320004478221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5614113675.

The product of its (nonzero) digits is 21504, while the sum is 33.

Adding to 320004478221 its reverse (122874400023), we get a palindrome (442878878244).

The spelling of 320004478221 in words is "three hundred twenty billion, four million, four hundred seventy-eight thousand, two hundred twenty-one".