321200020003212 has 96 divisors (see below), whose sum is σ = 951884260992000. Its totient is φ = 91754029120896.

The previous prime is 321200020003183. The next prime is 321200020003259. The reversal of 321200020003212 is 212300020002123.

321200020003212 is a `hidden beast` number, since 321 + 2 + 0 + 0 + 0 + 20 + 0 + 0 + 321 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36300712 + ... + 44273487.

It is an arithmetic number, because the mean of its divisors is an integer number (9915461052000).

Almost surely, 2^{321200020003212} is an apocalyptic number.

It is an amenable number.

321200020003212 is an abundant number, since it is smaller than the sum of its proper divisors (630684240988788).

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

321200020003212 is a wasteful number, since it uses less digits than its factorization.

321200020003212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80579492 (or 80579484 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 321200020003212 its reverse (212300020002123), we get a palindrome (533500040005335).

The spelling of 321200020003212 in words is "three hundred twenty-one trillion, two hundred billion, twenty million, three thousand, two hundred twelve".