221200222210 has 48 divisors (see below), whose sum is σ = 441980768376. Its totient is φ = 79640000000.

The previous prime is 221200222207. The next prime is 221200222223. The reversal of 221200222210 is 12222002122.

221200222210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 215675719281 + 5524502929 = 464409^2 + 74327^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 782791 + ... + 1027210.

Almost surely, 2^221200222210 is an apocalyptic number.

221200222210 is a deficient number, since it is larger than the sum of its proper divisors (220780546166).

221200222210 is a wasteful number, since it uses less digits than its factorization.

221200222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810131 (or 1810120 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221200222210 its reverse (12222002122), we get a palindrome (233422224332).

The spelling of 221200222210 in words is "two hundred twenty-one billion, two hundred million, two hundred twenty-two thousand, two hundred ten".