221232200104220 has 24 divisors (see below), whose sum is σ = 491916303761904. Its totient is φ = 83287416509696.

The previous prime is 221232200104199. The next prime is 221232200104243. The reversal of 221232200104220 is 22401002232122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325341470402 + ... + 325341471081.

It is an arithmetic number, because the mean of its divisors is an integer number (20496512656746).

Almost surely, 2^{221232200104220} is an apocalyptic number.

221232200104220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221232200104220 is an abundant number, since it is smaller than the sum of its proper divisors (270684103657684).

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

221232200104220 is a wasteful number, since it uses less digits than its factorization.

221232200104220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650682941509 (or 650682941507 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 221232200104220 its reverse (22401002232122), we get a palindrome (243633202336342).

The spelling of 221232200104220 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, two hundred million, one hundred four thousand, two hundred twenty".