321120020 has 48 divisors (see below), whose sum is σ = 757814400. Its totient is φ = 113410176.

The previous prime is 321120017. The next prime is 321120029. The reversal of 321120020 is 20021123.

It is a happy number.

321120020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 321119983 and 321120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321120029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20870 + ... + 32829.

It is an arithmetic number, because the mean of its divisors is an integer number (15787800).

Almost surely, 2^321120020 is an apocalyptic number.

It is an amenable number.

321120020 is an abundant number, since it is smaller than the sum of its proper divisors (436694380).

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

321120020 is a wasteful number, since it uses less digits than its factorization.

321120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53744 (or 53742 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 321120020 is about 17919.8219857230. The cubic root of 321120020 is about 684.7874524816.

Adding to 321120020 its reverse (20021123), we get a palindrome (341141143).

The spelling of 321120020 in words is "three hundred twenty-one million, one hundred twenty thousand, twenty".