202112022220 has 24 divisors (see below), whose sum is σ = 426001439808. Its totient is φ = 80546486400.

The previous prime is 202112022191. The next prime is 202112022223. The reversal of 202112022220 is 22220211202.

It is a junction number, because it is equal to n+sod(n) for n = 202112022194 and 202112022203.

It is not an unprimeable number, because it can be changed into a prime (202112022223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18639601 + ... + 18650440.

It is an arithmetic number, because the mean of its divisors is an integer number (17750059992).

Almost surely, 2^202112022220 is an apocalyptic number.

202112022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202112022220 is an abundant number, since it is smaller than the sum of its proper divisors (223889417588).

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

202112022220 is a wasteful number, since it uses less digits than its factorization.

202112022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37290321 (or 37290319 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202112022220 its reverse (22220211202), we get a palindrome (224332233422).

The spelling of 202112022220 in words is "two hundred two billion, one hundred twelve million, twenty-two thousand, two hundred twenty".