201221311204 has 12 divisors (see below), whose sum is σ = 352472351728. Its totient is φ = 100514925000.

The previous prime is 201221311183. The next prime is 201221311253. The reversal of 201221311204 is 402113122102.

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, 23927922 + ... + 23936329.

Almost surely, 2^201221311204 is an apocalyptic number.

It is an amenable number.

201221311204 is a deficient number, since it is larger than the sum of its proper divisors (151251040524).

201221311204 is a wasteful number, since it uses less digits than its factorization.

201221311204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47865306 (or 47865304 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201221311204 its reverse (402113122102), we get a palindrome (603334433306).

The spelling of 201221311204 in words is "two hundred one billion, two hundred twenty-one million, three hundred eleven thousand, two hundred four".