2020321220 has 48 divisors (see below), whose sum is σ = 4321608816. Its totient is φ = 793152000.

The previous prime is 2020321217. The next prime is 2020321223. The reversal of 2020321220 is 221230202.

It is an interprime number because it is at equal distance from previous prime (2020321217) and next prime (2020321223).

It can be written as a sum of positive squares in 8 ways, for example, as 39715204 + 1980606016 = 6302^2 + 44504^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2020321195 and 2020321204.

It is not an unprimeable number, because it can be changed into a prime (2020321223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658490 + ... + 661550.

It is an arithmetic number, because the mean of its divisors is an integer number (90033517).

Almost surely, 2^2020321220 is an apocalyptic number.

2020321220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020321220 is an abundant number, since it is smaller than the sum of its proper divisors (2301287596).

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

2020321220 is a wasteful number, since it uses less digits than its factorization.

2020321220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672 (or 3670 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2020321220 is about 44947.9834920322. The cubic root of 2020321220 is about 1264.1738673196.

Adding to 2020321220 its reverse (221230202), we get a palindrome (2241551422).

The spelling of 2020321220 in words is "two billion, twenty million, three hundred twenty-one thousand, two hundred twenty".