201221031330112 has 56 divisors (see below), whose sum is σ = 403711248593160. Its totient is φ = 99500783769600.

The previous prime is 201221031330097. The next prime is 201221031330113. The reversal of 201221031330112 is 211033130122102.

It can be written as a sum of positive squares in 4 ways, for example, as 156698721700096 + 44522309630016 = 12517936^2 + 6672504^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221031330113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12078787 + ... + 23416642.

Almost surely, 2^{201221031330112} is an apocalyptic number.

It is an amenable number.

201221031330112 is an abundant number, since it is smaller than the sum of its proper divisors (202490217263048).

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

201221031330112 is a wasteful number, since it uses less digits than its factorization.

201221031330112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35496419 (or 35496409 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 201221031330112 its reverse (211033130122102), we get a palindrome (412254161452214).

The spelling of 201221031330112 in words is "two hundred one trillion, two hundred twenty-one billion, thirty-one million, three hundred thirty thousand, one hundred twelve".