321200322020 has 12 divisors (see below), whose sum is σ = 674520676284. Its totient is φ = 128480128800.

The previous prime is 321200322011. The next prime is 321200322059. The reversal of 321200322020 is 20223002123.

It can be written as a sum of positive squares in 2 ways, for example, as 247707280804 + 73493041216 = 497702^2 + 271096^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 321200322020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8030008031 + ... + 8030008070.

It is an arithmetic number, because the mean of its divisors is an integer number (56210056357).

Almost surely, 2^321200322020 is an apocalyptic number.

It is an amenable number.

321200322020 is an abundant number, since it is smaller than the sum of its proper divisors (353320354264).

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

321200322020 is a wasteful number, since it uses less digits than its factorization.

321200322020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16060016110 (or 16060016108 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 321200322020 its reverse (20223002123), we get a palindrome (341423324143).

The spelling of 321200322020 in words is "three hundred twenty-one billion, two hundred million, three hundred twenty-two thousand, twenty".