321012320200000 has 672 divisors, whose sum is σ = 976079529411840. Its totient is φ = 103067289600000.

The previous prime is 321012320199953. The next prime is 321012320200063. The reversal of 321012320200000 is 2023210123.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 657555996 + ... + 658044004.

It is an arithmetic number, because the mean of its divisors is an integer number (1452499299720).

Almost surely, 2^{321012320200000} 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 321012320200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488039764705920).

321012320200000 is an abundant number, since it is smaller than the sum of its proper divisors (655067209211840).

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

321012320200000 is a wasteful number, since it uses less digits than its factorization.

321012320200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488093 (or 488063 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 321012320200000 its reverse (2023210123), we get a palindrome (321014343410123).

The spelling of 321012320200000 in words is "three hundred twenty-one trillion, twelve billion, three hundred twenty million, two hundred thousand".