2131444314121 has 4 divisors (see below), whose sum is σ = 2131795290772. Its totient is φ = 2131093337472.

The previous prime is 2131444314031. The next prime is 2131444314173. The reversal of 2131444314121 is 1214134441312.

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 1236679667721 + 894764646400 = 1112061^2 + 945920^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131444314121 - 2²⁵ = 2131410759689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131444344121) 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 3 ways as a sum of consecutive naturals, for example, 175479216 + ... + 175491361.

It is an arithmetic number, because the mean of its divisors is an integer number (532948822693).

Almost surely, 2^{2131444314121} is an apocalyptic number.

It is an amenable number.

2131444314121 is a deficient number, since it is larger than the sum of its proper divisors (350976651).

2131444314121 is an equidigital number, since it uses as much as digits as its factorization.

2131444314121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350976650.

The product of its digits is 9216, while the sum is 31.

Adding to 2131444314121 its reverse (1214134441312), we get a palindrome (3345578755433).

The spelling of 2131444314121 in words is "two trillion, one hundred thirty-one billion, four hundred forty-four million, three hundred fourteen thousand, one hundred twenty-one".