321110213320 has 32 divisors (see below), whose sum is σ = 778074748920. Its totient is φ = 118563770880.

The previous prime is 321110213293. The next prime is 321110213323. The reversal of 321110213320 is 23312011123.

It can be written as a sum of positive squares in 4 ways, for example, as 291727453924 + 29382759396 = 540118^2 + 171414^2 .

It is a super-2 number, since 2×321110213320² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321110213323) 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, 308759301 + ... + 308760340.

Almost surely, 2^321110213320 is an apocalyptic number.

It is an amenable number.

321110213320 is an abundant number, since it is smaller than the sum of its proper divisors (456964535600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321110213320 is a wasteful number, since it uses less digits than its factorization.

321110213320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617519665 (or 617519661 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 321110213320 its reverse (23312011123), we get a palindrome (344422224443).

The spelling of 321110213320 in words is "three hundred twenty-one billion, one hundred ten million, two hundred thirteen thousand, three hundred twenty".