2013124131421 has 6 divisors (see below), whose sum is σ = 2179891811130. Its totient is φ = 1858268428848.

The previous prime is 2013124131391. The next prime is 2013124131437. The reversal of 2013124131421 is 1241314213102.

It can be written as a sum of positive squares in 3 ways, for example, as 32028471225 + 1981095660196 = 178965^2 + 1407514^2 .

It is not a de Polignac number, because 2013124131421 - 2²¹ = 2013122034269 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 (2013124131451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5955988386 + ... + 5955988723.

It is an arithmetic number, because the mean of its divisors is an integer number (363315301855).

Almost surely, 2^{2013124131421} is an apocalyptic number.

It is an amenable number.

2013124131421 is a deficient number, since it is larger than the sum of its proper divisors (166767679709).

2013124131421 is a wasteful number, since it uses less digits than its factorization.

2013124131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11911977135 (or 11911977122 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 2013124131421 its reverse (1241314213102), we get a palindrome (3254438344523).

The spelling of 2013124131421 in words is "two trillion, thirteen billion, one hundred twenty-four million, one hundred thirty-one thousand, four hundred twenty-one".