321120220002020 has 96 divisors (see below), whose sum is σ = 705622353004800. Its totient is φ = 122522960254464.

The previous prime is 321120220002013. The next prime is 321120220002041. The reversal of 321120220002020 is 20200022021123.

It is a self number, because there is not a number n which added to its sum of digits gives 321120220002020.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1357816022 + ... + 1358052498.

It is an arithmetic number, because the mean of its divisors is an integer number (7350232843800).

Almost surely, 2^{321120220002020} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321120220002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352811176502400).

321120220002020 is an abundant number, since it is smaller than the sum of its proper divisors (384502133002780).

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

321120220002020 is a wasteful number, since it uses less digits than its factorization.

321120220002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244677 (or 244675 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 321120220002020 its reverse (20200022021123), we get a palindrome (341320242023143).

The spelling of 321120220002020 in words is "three hundred twenty-one trillion, one hundred twenty billion, two hundred twenty million, two thousand, twenty".