321132002020 has 12 divisors (see below), whose sum is σ = 674377204284. Its totient is φ = 128452800800.

The previous prime is 321132001997. The next prime is 321132002027. The reversal of 321132002020 is 20200231123.

It can be written as a sum of positive squares in 2 ways, for example, as 172769910336 + 148362091684 = 415656^2 + 385178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321132001985 and 321132002003.

It is not an unprimeable number, because it can be changed into a prime (321132002027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8028300031 + ... + 8028300070.

It is an arithmetic number, because the mean of its divisors is an integer number (56198100357).

Almost surely, 2^321132002020 is an apocalyptic number.

It is an amenable number.

321132002020 is an abundant number, since it is smaller than the sum of its proper divisors (353245202264).

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

321132002020 is a wasteful number, since it uses less digits than its factorization.

321132002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16056600110 (or 16056600108 counting only the distinct ones).

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

Adding to 321132002020 its reverse (20200231123), we get a palindrome (341332233143).

The spelling of 321132002020 in words is "three hundred twenty-one billion, one hundred thirty-two million, two thousand, twenty".