131222323120 has 80 divisors (see below), whose sum is σ = 348963379200. Its totient is φ = 44953489152.

The previous prime is 131222323091. The next prime is 131222323139. The reversal of 131222323120 is 21323222131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 131222323091 and 131222323100.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 589081 + ... + 780679.

It is an arithmetic number, because the mean of its divisors is an integer number (4362042240).

Almost surely, 2^131222323120 is an apocalyptic number.

131222323120 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 131222323120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174481689600).

131222323120 is an abundant number, since it is smaller than the sum of its proper divisors (217741056080).

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

131222323120 is a wasteful number, since it uses less digits than its factorization.

131222323120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192842 (or 192836 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 131222323120 its reverse (21323222131), we get a palindrome (152545545251).

The spelling of 131222323120 in words is "one hundred thirty-one billion, two hundred twenty-two million, three hundred twenty-three thousand, one hundred twenty".