321022253216 has 96 divisors (see below), whose sum is σ = 763499520000. Its totient is φ = 129794095872.

The previous prime is 321022253203. The next prime is 321022253221. The reversal of 321022253216 is 612352220123.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859385 + ... + 1174983.

It is an arithmetic number, because the mean of its divisors is an integer number (7953120000).

Almost surely, 2^321022253216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321022253216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381749760000).

321022253216 is an abundant number, since it is smaller than the sum of its proper divisors (442477266784).

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

321022253216 is a wasteful number, since it uses less digits than its factorization.

321022253216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315874 (or 315866 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 321022253216 its reverse (612352220123), we get a palindrome (933374473339).

The spelling of 321022253216 in words is "three hundred twenty-one billion, twenty-two million, two hundred fifty-three thousand, two hundred sixteen".