221044222200 has 96 divisors (see below), whose sum is σ = 693493113600. Its totient is φ = 58234930560.

The previous prime is 221044222193. The next prime is 221044222229. The reversal of 221044222200 is 2222440122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2169520 + ... + 2269119.

It is an arithmetic number, because the mean of its divisors is an integer number (7223886600).

Almost surely, 2^221044222200 is an apocalyptic number.

221044222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221044222200 is an abundant number, since it is smaller than the sum of its proper divisors (472448891400).

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

221044222200 is a wasteful number, since it uses less digits than its factorization.

221044222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438741 (or 4438732 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 221044222200 its reverse (2222440122), we get a palindrome (223266662322).

The spelling of 221044222200 in words is "two hundred twenty-one billion, forty-four million, two hundred twenty-two thousand, two hundred".