2131210321103 has 16 divisors (see below), whose sum is σ = 2200470053760. Its totient is φ = 2063015813376.

The previous prime is 2131210321081. The next prime is 2131210321133. The reversal of 2131210321103 is 3011230121312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2131210321103 - 2³⁴ = 2114030451919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131210321133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2480075 + ... + 3226947.

It is an arithmetic number, because the mean of its divisors is an integer number (137529378360).

Almost surely, 2^{2131210321103} is an apocalyptic number.

2131210321103 is a deficient number, since it is larger than the sum of its proper divisors (69259732657).

2131210321103 is a wasteful number, since it uses less digits than its factorization.

2131210321103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747586.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2131210321103 its reverse (3011230121312), we get a palindrome (5142440442415).

The spelling of 2131210321103 in words is "two trillion, one hundred thirty-one billion, two hundred ten million, three hundred twenty-one thousand, one hundred three".