221231010112200 has 144 divisors (see below), whose sum is σ = 810509973483600. Its totient is φ = 53631760022400.

The previous prime is 221231010112181. The next prime is 221231010112247. The reversal of 221231010112200 is 2211010132122.

221231010112200 is a `hidden beast` number, since 2 + 212 + 310 + 10 + 112 + 20 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 35 ways as a sum of consecutive naturals, for example, 5586621870 + ... + 5586661469.

It is an arithmetic number, because the mean of its divisors is an integer number (5628541482525).

Almost surely, 2^{221231010112200} is an apocalyptic number.

221231010112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221231010112200 is an abundant number, since it is smaller than the sum of its proper divisors (589278963371400).

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

221231010112200 is a wasteful number, since it uses less digits than its factorization.

221231010112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11173283372 (or 11173283360 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 221231010112200 its reverse (2211010132122), we get a palindrome (223442020244322).

The spelling of 221231010112200 in words is "two hundred twenty-one trillion, two hundred thirty-one billion, ten million, one hundred twelve thousand, two hundred".