201221202120112 has 20 divisors (see below), whose sum is σ = 389911800737056. Its totient is φ = 100598801929920.

The previous prime is 201221202120041. The next prime is 201221202120139. The reversal of 201221202120112 is 211021202122102.

It is a self number, because there is not a number n which added to its sum of digits gives 201221202120112.

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, 737304939 + ... + 737577802.

Almost surely, 2^{201221202120112} is an apocalyptic number.

It is an amenable number.

201221202120112 is a deficient number, since it is larger than the sum of its proper divisors (188690598616944).

201221202120112 is a wasteful number, since it uses less digits than its factorization.

201221202120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474891276 (or 1474891270 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201221202120112 its reverse (211021202122102), we get a palindrome (412242404242214).

The spelling of 201221202120112 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred two million, one hundred twenty thousand, one hundred twelve".