131321020121121 has 32 divisors (see below), whose sum is σ = 181001956019200. Its totient is φ = 84601889648640.

The previous prime is 131321020121113. The next prime is 131321020121171. The reversal of 131321020121121 is 121121020123131.

It is not a de Polignac number, because 131321020121121 - 2³ = 131321020121113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131321020121171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200196645 + ... + 200851533.

It is an arithmetic number, because the mean of its divisors is an integer number (5656311125600).

Almost surely, 2^{131321020121121} is an apocalyptic number.

It is an amenable number.

131321020121121 is a deficient number, since it is larger than the sum of its proper divisors (49680935898079).

131321020121121 is a wasteful number, since it uses less digits than its factorization.

131321020121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658009.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 131321020121121 its reverse (121121020123131), we get a palindrome (252442040244252).

The spelling of 131321020121121 in words is "one hundred thirty-one trillion, three hundred twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred twenty-one".