202021110220 has 48 divisors (see below), whose sum is σ = 440953682400. Its totient is φ = 77652126720.

The previous prime is 202021110211. The next prime is 202021110227. The reversal of 202021110220 is 22011120202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 202021110220.

It is not an unprimeable number, because it can be changed into a prime (202021110227) 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, 703005 + ... + 947764.

It is an arithmetic number, because the mean of its divisors is an integer number (9186535050).

Almost surely, 2^202021110220 is an apocalyptic number.

202021110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202021110220 is an abundant number, since it is smaller than the sum of its proper divisors (238932572180).

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

202021110220 is a wasteful number, since it uses less digits than its factorization.

202021110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651018 (or 1651016 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202021110220 its reverse (22011120202), we get a palindrome (224032230422).

The spelling of 202021110220 in words is "two hundred two billion, twenty-one million, one hundred ten thousand, two hundred twenty".