202020220420 has 48 divisors (see below), whose sum is σ = 452223878400. Its totient is φ = 75585968640.

The previous prime is 202020220417. The next prime is 202020220429. The reversal of 202020220420 is 24022020202.

202020220420 is digitally balanced in base 2 and base 3, because in such bases 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 = 202020220394 and 202020220403.

It is not an unprimeable number, because it can be changed into a prime (202020220429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3334741 + ... + 3394780.

It is an arithmetic number, because the mean of its divisors is an integer number (9421330800).

Almost surely, 2^202020220420 is an apocalyptic number.

202020220420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202020220420 is an abundant number, since it is smaller than the sum of its proper divisors (250203657980).

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

202020220420 is a wasteful number, since it uses less digits than its factorization.

202020220420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729628 (or 6729626 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 202020220420 its reverse (24022020202), we get a palindrome (226042240622).

The spelling of 202020220420 in words is "two hundred two billion, twenty million, two hundred twenty thousand, four hundred twenty".