221210201222 has 16 divisors (see below), whose sum is σ = 338962898880. Its totient is φ = 108223786368.

The previous prime is 221210201213. The next prime is 221210201239. The reversal of 221210201222 is 222102012122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221210201222.

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 7 ways as a sum of consecutive naturals, for example, 63008 + ... + 668124.

It is an arithmetic number, because the mean of its divisors is an integer number (21185181180).

Almost surely, 2^221210201222 is an apocalyptic number.

221210201222 is a deficient number, since it is larger than the sum of its proper divisors (117752697658).

221210201222 is a wasteful number, since it uses less digits than its factorization.

221210201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609055.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221210201222 its reverse (222102012122), we get a palindrome (443312213344).

The spelling of 221210201222 in words is "two hundred twenty-one billion, two hundred ten million, two hundred one thousand, two hundred twenty-two".