221200202132 has 48 divisors (see below), whose sum is σ = 504456583680. Its totient is φ = 82360253952.

The previous prime is 221200202123. The next prime is 221200202147. The reversal of 221200202132 is 231202002122.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 221200202132.

It is a congruent number.

It is an unprimeable number.

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, 17867132 + ... + 17879507.

It is an arithmetic number, because the mean of its divisors is an integer number (10509512160).

Almost surely, 2^221200202132 is an apocalyptic number.

It is an amenable number.

221200202132 is an abundant number, since it is smaller than the sum of its proper divisors (283256381548).

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

221200202132 is a wasteful number, since it uses less digits than its factorization.

221200202132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35746680 (or 35746678 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 221200202132 its reverse (231202002122), we get a palindrome (452402204254).

The spelling of 221200202132 in words is "two hundred twenty-one billion, two hundred million, two hundred two thousand, one hundred thirty-two".