131321020121120 has 24 divisors (see below), whose sum is σ = 310245910036524. Its totient is φ = 52528408048384.

The previous prime is 131321020121113. The next prime is 131321020121171. The reversal of 131321020121120 is 21121020123131.

It can be written as a sum of positive squares in 2 ways, for example, as 121358689429264 + 9962330691856 = 11016292^2 + 3156316^2 .

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 = 131321020121092 and 131321020121101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410378187719 + ... + 410378188038.

Almost surely, 2^{131321020121120} is an apocalyptic number.

131321020121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131321020121120 is an abundant number, since it is smaller than the sum of its proper divisors (178924889915404).

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

131321020121120 is an equidigital number, since it uses as much as digits as its factorization.

131321020121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820756375772 (or 820756375764 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 131321020121120 its reverse (21121020123131), we get a palindrome (152442040244251).

The spelling of 131321020121120 in words is "one hundred thirty-one trillion, three hundred twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred twenty".