201221202002112 has 84 divisors (see below), whose sum is σ = 579497724112216. Its totient is φ = 66755848965120.

The previous prime is 201221202002027. The next prime is 201221202002143. The reversal of 201221202002112 is 211200202122102.

It is a happy number.

201221202002112 is a `hidden beast` number, since 201 + 221 + 20 + 200 + 21 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 827703973 + ... + 827947044.

Almost surely, 2^{201221202002112} is an apocalyptic number.

It is an amenable number.

201221202002112 is an abundant number, since it is smaller than the sum of its proper divisors (378276522110104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201221202002112 is a wasteful number, since it uses less digits than its factorization.

201221202002112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655651246 (or 1655651233 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201221202002112 its reverse (211200202122102), we get a palindrome (412421404124214).

The spelling of 201221202002112 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred two million, two thousand, one hundred twelve".