320123333221 has 8 divisors (see below), whose sum is σ = 320847279480. Its totient is φ = 319400196288.

The previous prime is 320123333171. The next prime is 320123333227. The reversal of 320123333221 is 122333321023.

It can be written as a sum of positive squares in 4 ways, for example, as 72503640225 + 247619692996 = 269265^2 + 497614^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320123333221 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 (320123333227) 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, 593175 + ... + 996043.

It is an arithmetic number, because the mean of its divisors is an integer number (40105909935).

Almost surely, 2^320123333221 is an apocalyptic number.

It is an amenable number.

320123333221 is a deficient number, since it is larger than the sum of its proper divisors (723946259).

320123333221 is an equidigital number, since it uses as much as digits as its factorization.

320123333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404663.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 320123333221 its reverse (122333321023), we get a palindrome (442456654244).

The spelling of 320123333221 in words is "three hundred twenty billion, one hundred twenty-three million, three hundred thirty-three thousand, two hundred twenty-one".