321203332412020 has 24 divisors (see below), whose sum is σ = 675187651387368. Its totient is φ = 128355494236800.

The previous prime is 321203332411961. The next prime is 321203332412059. The reversal of 321203332412020 is 20214233302123.

It can be written as a sum of positive squares in 4 ways, for example, as 20746731400164 + 300456601011856 = 4554858^2 + 17333684^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 321203332412020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7864899571 + ... + 7864940410.

It is an arithmetic number, because the mean of its divisors is an integer number (28132818807807).

Almost surely, 2^{321203332412020} is an apocalyptic number.

It is an amenable number.

321203332412020 is an abundant number, since it is smaller than the sum of its proper divisors (353984318975348).

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

321203332412020 is a wasteful number, since it uses less digits than its factorization.

321203332412020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15729841011 (or 15729841009 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 321203332412020 its reverse (20214233302123), we get a palindrome (341417565714143).

The spelling of 321203332412020 in words is "three hundred twenty-one trillion, two hundred three billion, three hundred thirty-two million, four hundred twelve thousand, twenty".