212201222 has 8 divisors (see below), whose sum is σ = 320208336. Its totient is φ = 105465112.

The previous prime is 212201221. The next prime is 212201233. The reversal of 212201222 is 222102212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 212201197 and 212201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317333 + ... + 318000.

It is an arithmetic number, because the mean of its divisors is an integer number (40026042).

Almost surely, 2^212201222 is an apocalyptic number.

212201222 is a deficient number, since it is larger than the sum of its proper divisors (108007114).

212201222 is a wasteful number, since it uses less digits than its factorization.

212201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635502.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 212201222 is about 14567.1281315158. The cubic root of 212201222 is about 596.4617890824.

Adding to 212201222 its reverse (222102212), we get a palindrome (434303434).

The spelling of 212201222 in words is "two hundred twelve million, two hundred one thousand, two hundred twenty-two".