13131203120120 has 128 divisors (see below), whose sum is σ = 30199632814080. Its totient is φ = 5137197120000.

The previous prime is 13131203120093. The next prime is 13131203120141. The reversal of 13131203120120 is 2102130213131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13131203120092 and 13131203120101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309304895 + ... + 309347345.

It is an arithmetic number, because the mean of its divisors is an integer number (235934631360).

Almost surely, 2^{13131203120120} is an apocalyptic number.

13131203120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13131203120120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15099816407040).

13131203120120 is an abundant number, since it is smaller than the sum of its proper divisors (17068429693960).

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

13131203120120 is a wasteful number, since it uses less digits than its factorization.

13131203120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43237 (or 43233 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 13131203120120 its reverse (2102130213131), we get a palindrome (15233333333251).

The spelling of 13131203120120 in words is "thirteen trillion, one hundred thirty-one billion, two hundred three million, one hundred twenty thousand, one hundred twenty".