21030113013 has 16 divisors (see below), whose sum is σ = 34510955136. Its totient is φ = 11092806720.

The previous prime is 21030113009. The next prime is 21030113017. The reversal of 21030113013 is 31031103012.

It is an interprime number because it is at equal distance from previous prime (21030113009) and next prime (21030113017).

It is not a de Polignac number, because 21030113013 - 2² = 21030113009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21030112983 and 21030113001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030113017) 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, 38516418 + ... + 38516963.

It is an arithmetic number, because the mean of its divisors is an integer number (2156934696).

Almost surely, 2^21030113013 is an apocalyptic number.

It is an amenable number.

21030113013 is a deficient number, since it is larger than the sum of its proper divisors (13480842123).

21030113013 is a wasteful number, since it uses less digits than its factorization.

21030113013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77033404.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21030113013 its reverse (31031103012), we get a palindrome (52061216025).

The spelling of 21030113013 in words is "twenty-one billion, thirty million, one hundred thirteen thousand, thirteen".