212200201221 has 8 divisors (see below), whose sum is σ = 283185550560. Its totient is φ = 141340826352.

The previous prime is 212200201189. The next prime is 212200201223. The reversal of 212200201221 is 122102002212.

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

It is not a de Polignac number, because 212200201221 - 2⁵ = 212200201189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212200201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200201223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31489686 + ... + 31496423.

It is an arithmetic number, because the mean of its divisors is an integer number (35398193820).

Almost surely, 2^212200201221 is an apocalyptic number.

It is an amenable number.

212200201221 is a deficient number, since it is larger than the sum of its proper divisors (70985349339).

212200201221 is a wasteful number, since it uses less digits than its factorization.

212200201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62987235.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212200201221 its reverse (122102002212), we get a palindrome (334302203433).

The spelling of 212200201221 in words is "two hundred twelve billion, two hundred million, two hundred one thousand, two hundred twenty-one".