2013101321021 has 36 divisors (see below), whose sum is σ = 2425547557440. Its totient is φ = 1665851972400.

The previous prime is 2013101321017. The next prime is 2013101321041. The reversal of 2013101321021 is 1201231013102.

It is not a de Polignac number, because 2013101321021 - 2² = 2013101321017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013101321041) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19679276 + ... + 19781306.

It is an arithmetic number, because the mean of its divisors is an integer number (67376321040).

Almost surely, 2^{2013101321021} is an apocalyptic number.

It is an amenable number.

2013101321021 is a deficient number, since it is larger than the sum of its proper divisors (412446236419).

2013101321021 is a wasteful number, since it uses less digits than its factorization.

2013101321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102526 (or 102488 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2013101321021 its reverse (1201231013102), we get a palindrome (3214332334123).

The spelling of 2013101321021 in words is "two trillion, thirteen billion, one hundred one million, three hundred twenty-one thousand, twenty-one".