221131200222 has 12 divisors (see below), whose sum is σ = 479117600520. Its totient is φ = 73710400068.

The previous prime is 221131200181. The next prime is 221131200233. The reversal of 221131200222 is 222002131122.

221131200222 is a `hidden beast` number, since 2 + 211 + 31 + 200 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 12285066679 = 221131200222 / (2 + 2 + 1 + 1 + 3 + 1 + 2 + 0 + 0 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 221131200195 and 221131200204.

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 5 ways as a sum of consecutive naturals, for example, 6142533322 + ... + 6142533357.

It is an arithmetic number, because the mean of its divisors is an integer number (39926466710).

Almost surely, 2^221131200222 is an apocalyptic number.

221131200222 is an abundant number, since it is smaller than the sum of its proper divisors (257986400298).

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

221131200222 is a wasteful number, since it uses less digits than its factorization.

221131200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12285066687 (or 12285066684 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221131200222 its reverse (222002131122), we get a palindrome (443133331344).

The spelling of 221131200222 in words is "two hundred twenty-one billion, one hundred thirty-one million, two hundred thousand, two hundred twenty-two".