202120320220 has 48 divisors (see below), whose sum is σ = 522403293888. Its totient is φ = 63967749120.

The previous prime is 202120320163. The next prime is 202120320221. The reversal of 202120320220 is 22023021202.

It is a junction number, because it is equal to n+sod(n) for n = 202120320194 and 202120320203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120320221) 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, 55525741 + ... + 55529380.

It is an arithmetic number, because the mean of its divisors is an integer number (10883401956).

Almost surely, 2^202120320220 is an apocalyptic number.

202120320220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120320220 is an abundant number, since it is smaller than the sum of its proper divisors (320282973668).

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

202120320220 is a wasteful number, since it uses less digits than its factorization.

202120320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111055150 (or 111055148 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 202120320220 its reverse (22023021202), we get a palindrome (224143341422).

The spelling of 202120320220 in words is "two hundred two billion, one hundred twenty million, three hundred twenty thousand, two hundred twenty".