221200200220 has 48 divisors (see below), whose sum is σ = 469223193600. Its totient is φ = 87587426304.

The previous prime is 221200200197. The next prime is 221200200223. The reversal of 221200200220 is 22002002122.

It is a self number, because there is not a number n which added to its sum of digits gives 221200200220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200200223) 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, 1043482 + ... + 1237438.

It is an arithmetic number, because the mean of its divisors is an integer number (9775483200).

Almost surely, 2^221200200220 is an apocalyptic number.

221200200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221200200220 is an abundant number, since it is smaller than the sum of its proper divisors (248022993380).

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

221200200220 is a wasteful number, since it uses less digits than its factorization.

221200200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194542 (or 194540 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 221200200220 its reverse (22002002122), we get a palindrome (243202202342).

The spelling of 221200200220 in words is "two hundred twenty-one billion, two hundred million, two hundred thousand, two hundred twenty".