201231221320112 has 60 divisors (see below), whose sum is σ = 405083499376920. Its totient is φ = 96835733869056.

The previous prime is 201231221320061. The next prime is 201231221320121. The reversal of 201231221320112 is 211023122132102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19677662 + ... + 28101117.

It is an arithmetic number, because the mean of its divisors is an integer number (6751391656282).

Almost surely, 2^{201231221320112} is an apocalyptic number.

It is an amenable number.

201231221320112 is an abundant number, since it is smaller than the sum of its proper divisors (203852278056808).

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

201231221320112 is a wasteful number, since it uses less digits than its factorization.

201231221320112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47779158 (or 47779123 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 201231221320112 its reverse (211023122132102), we get a palindrome (412254343452214).

The spelling of 201231221320112 in words is "two hundred one trillion, two hundred thirty-one billion, two hundred twenty-one million, three hundred twenty thousand, one hundred twelve".