202120210220 has 48 divisors (see below), whose sum is σ = 427190899968. Its totient is φ = 80326921920.

The previous prime is 202120210213. The next prime is 202120210223. The reversal of 202120210220 is 22012021202.

It is a junction number, because it is equal to n+sod(n) for n = 202120210195 and 202120210204.

It is not an unprimeable number, because it can be changed into a prime (202120210223) 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, 7906379 + ... + 7931901.

It is an arithmetic number, because the mean of its divisors is an integer number (8899810416).

Almost surely, 2^202120210220 is an apocalyptic number.

202120210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120210220 is an abundant number, since it is smaller than the sum of its proper divisors (225070689748).

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

202120210220 is a wasteful number, since it uses less digits than its factorization.

202120210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28070 (or 28068 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 202120210220 its reverse (22012021202), we get a palindrome (224132231422).

The spelling of 202120210220 in words is "two hundred two billion, one hundred twenty million, two hundred ten thousand, two hundred twenty".