2131321130121 has 16 divisors (see below), whose sum is σ = 2861841006720. Its totient is φ = 1410849292800.

The previous prime is 2131321130083. The next prime is 2131321130123. The reversal of 2131321130121 is 1210311231312.

It is not a de Polignac number, because 2131321130121 - 2¹⁴ = 2131321113737 is a prime.

It is a super-2 number, since 2×2131321130121² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2131321130123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5286 + ... + 2064623.

It is an arithmetic number, because the mean of its divisors is an integer number (178865062920).

Almost surely, 2^{2131321130121} is an apocalyptic number.

It is an amenable number.

2131321130121 is a deficient number, since it is larger than the sum of its proper divisors (730519876599).

2131321130121 is a wasteful number, since it uses less digits than its factorization.

2131321130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072336.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 2131321130121 its reverse (1210311231312), we get a palindrome (3341632361433).

The spelling of 2131321130121 in words is "two trillion, one hundred thirty-one billion, three hundred twenty-one million, one hundred thirty thousand, one hundred twenty-one".