131122013020 has 48 divisors (see below), whose sum is σ = 296589363840. Its totient is φ = 48532792896.

The previous prime is 131122012999. The next prime is 131122013021. The reversal of 131122013020 is 20310221131.

It is a junction number, because it is equal to n+sod(n) for n = 131122012985 and 131122013003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131122013021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3995962 + ... + 4028641.

It is an arithmetic number, because the mean of its divisors is an integer number (6178945080).

Almost surely, 2^131122013020 is an apocalyptic number.

131122013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131122013020 is an abundant number, since it is smaller than the sum of its proper divisors (165467350820).

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

131122013020 is a wasteful number, since it uses less digits than its factorization.

131122013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8024674 (or 8024672 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131122013020 its reverse (20310221131), we get a palindrome (151432234151).

The spelling of 131122013020 in words is "one hundred thirty-one billion, one hundred twenty-two million, thirteen thousand, twenty".