321204104310020 has 48 divisors (see below), whose sum is σ = 721569729610800. Its totient is φ = 119677259956224.

The previous prime is 321204104309981. The next prime is 321204104310073. The reversal of 321204104310020 is 20013401402123.

It can be written as a sum of positive squares in 8 ways, for example, as 13096857005764 + 308107247304256 = 3618958^2 + 17552984^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4869647195 + ... + 4869713154.

It is an arithmetic number, because the mean of its divisors is an integer number (15032702700225).

Almost surely, 2^{321204104310020} is an apocalyptic number.

It is an amenable number.

321204104310020 is an abundant number, since it is smaller than the sum of its proper divisors (400365625300780).

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

321204104310020 is a wasteful number, since it uses less digits than its factorization.

321204104310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9739360472 (or 9739360470 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 321204104310020 its reverse (20013401402123), we get a palindrome (341217505712143).

The spelling of 321204104310020 in words is "three hundred twenty-one trillion, two hundred four billion, one hundred four million, three hundred ten thousand, twenty".