321232112020 has 24 divisors (see below), whose sum is σ = 697849072200. Its totient is φ = 124062056832.

The previous prime is 321232111951. The next prime is 321232112021. The reversal of 321232112020 is 20211232123.

It can be written as a sum of positive squares in 4 ways, for example, as 102870298756 + 218361813264 = 320734^2 + 467292^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321232112021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276923655 + ... + 276924814.

It is an arithmetic number, because the mean of its divisors is an integer number (29077044675).

Almost surely, 2^321232112020 is an apocalyptic number.

It is an amenable number.

321232112020 is an abundant number, since it is smaller than the sum of its proper divisors (376616960180).

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

321232112020 is a wasteful number, since it uses less digits than its factorization.

321232112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553848507 (or 553848505 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 321232112020 its reverse (20211232123), we get a palindrome (341443344143).

The spelling of 321232112020 in words is "three hundred twenty-one billion, two hundred thirty-two million, one hundred twelve thousand, twenty".