20020303220 has 24 divisors (see below), whose sum is σ = 42161752584. Its totient is φ = 7985432576.

The previous prime is 20020303189. The next prime is 20020303229. The reversal of 20020303220 is 2230302002.

It can be written as a sum of positive squares in 4 ways, for example, as 5184576016 + 14835727204 = 72004^2 + 121802^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20020303195 and 20020303204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020303229) 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 7 ways as a sum of consecutive naturals, for example, 1410809 + ... + 1424928.

It is an arithmetic number, because the mean of its divisors is an integer number (1756739691).

Almost surely, 2^20020303220 is an apocalyptic number.

20020303220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020303220 is an abundant number, since it is smaller than the sum of its proper divisors (22141449364).

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

20020303220 is a wasteful number, since it uses less digits than its factorization.

20020303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836099 (or 2836097 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

Adding to 20020303220 its reverse (2230302002), we get a palindrome (22250605222).

The spelling of 20020303220 in words is "twenty billion, twenty million, three hundred three thousand, two hundred twenty".