131021220320112 has 20 divisors (see below), whose sum is σ = 338471485827080. Its totient is φ = 43673740106688.

The previous prime is 131021220320101. The next prime is 131021220320119. The reversal of 131021220320112 is 211023022120131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021220320119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364804378287 + ... + 1364804378382.

It is an arithmetic number, because the mean of its divisors is an integer number (16923574291354).

Almost surely, 2^{131021220320112} is an apocalyptic number.

131021220320112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131021220320112 is an abundant number, since it is smaller than the sum of its proper divisors (207450265506968).

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

131021220320112 is a wasteful number, since it uses less digits than its factorization.

131021220320112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729608756680 (or 2729608756674 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 131021220320112 its reverse (211023022120131), we get a palindrome (342044242440243).

The spelling of 131021220320112 in words is "one hundred thirty-one trillion, twenty-one billion, two hundred twenty million, three hundred twenty thousand, one hundred twelve".