221244102200 has 48 divisors (see below), whose sum is σ = 561155501160. Its totient is φ = 80452400000.

The previous prime is 221244102187. The next prime is 221244102203. The reversal of 221244102200 is 2201442122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221244102203) 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 11 ways as a sum of consecutive naturals, for example, 50280551 + ... + 50284950.

Almost surely, 2^221244102200 is an apocalyptic number.

221244102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221244102200 is an abundant number, since it is smaller than the sum of its proper divisors (339911398960).

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

221244102200 is a wasteful number, since it uses less digits than its factorization.

221244102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100565528 (or 100565519 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221244102200 its reverse (2201442122), we get a palindrome (223445544322).

The spelling of 221244102200 in words is "two hundred twenty-one billion, two hundred forty-four million, one hundred two thousand, two hundred".