201221120112 has 40 divisors (see below), whose sum is σ = 524679382656. Its totient is φ = 66446847936.

The previous prime is 201221120099. The next prime is 201221120153. The reversal of 201221120112 is 211021122102.

201221120112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 201221120091 and 201221120100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19584148 + ... + 19594419.

Almost surely, 2^201221120112 is an apocalyptic number.

It is an amenable number.

201221120112 is an abundant number, since it is smaller than the sum of its proper divisors (323458262544).

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

201221120112 is a wasteful number, since it uses less digits than its factorization.

201221120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39178685 (or 39178679 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201221120112 its reverse (211021122102), we get a palindrome (412242242214).

The spelling of 201221120112 in words is "two hundred one billion, two hundred twenty-one million, one hundred twenty thousand, one hundred twelve".