131303112021121 has 4 divisors (see below), whose sum is σ = 131342178704644. Its totient is φ = 131264045337600.

The previous prime is 131303112021083. The next prime is 131303112021139. The reversal of 131303112021121 is 121120211303131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43211954016400 + 88091158004721 = 6573580^2 + 9385689^2 .

It is a cyclic number.

It is not a de Polignac number, because 131303112021121 - 2¹⁹ = 131303111496833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131303112021092 and 131303112021101.

It is not an unprimeable number, because it can be changed into a prime (131303112021421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19533336720 + ... + 19533343441.

It is an arithmetic number, because the mean of its divisors is an integer number (32835544676161).

Almost surely, 2^{131303112021121} is an apocalyptic number.

It is an amenable number.

131303112021121 is a deficient number, since it is larger than the sum of its proper divisors (39066683523).

131303112021121 is an equidigital number, since it uses as much as digits as its factorization.

131303112021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39066683522.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 131303112021121 its reverse (121120211303131), we get a palindrome (252423323324252).

The spelling of 131303112021121 in words is "one hundred thirty-one trillion, three hundred three billion, one hundred twelve million, twenty-one thousand, one hundred twenty-one".