201221201222 has 8 divisors (see below), whose sum is σ = 317717686200. Its totient is φ = 95315305824.

The previous prime is 201221201213. The next prime is 201221201239. The reversal of 201221201222 is 222102122102.

It is a happy number.

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

It is a super-2 number, since 2×201221201222² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201221201222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2647647347 + ... + 2647647422.

It is an arithmetic number, because the mean of its divisors is an integer number (39714710775).

Almost surely, 2^201221201222 is an apocalyptic number.

201221201222 is a deficient number, since it is larger than the sum of its proper divisors (116496484978).

201221201222 is a wasteful number, since it uses less digits than its factorization.

201221201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5295294790.

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

Adding to 201221201222 its reverse (222102122102), we get a palindrome (423323323324).

The spelling of 201221201222 in words is "two hundred one billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-two".