21033130013 has 8 divisors (see below), whose sum is σ = 24041574720. Its totient is φ = 18025613280.

The previous prime is 21033130009. The next prime is 21033130021. The reversal of 21033130013 is 31003133012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21033130013 - 2² = 21033130009 is a prime.

It is a super-2 number, since 2×21033130013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21033129973 and 21033130000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033130003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182723 + ... + 274688.

It is an arithmetic number, because the mean of its divisors is an integer number (3005196840).

Almost surely, 2^21033130013 is an apocalyptic number.

It is an amenable number.

21033130013 is a deficient number, since it is larger than the sum of its proper divisors (3008444707).

21033130013 is an equidigital number, since it uses as much as digits as its factorization.

21033130013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463987.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21033130013 its reverse (31003133012), we get a palindrome (52036263025).

The spelling of 21033130013 in words is "twenty-one billion, thirty-three million, one hundred thirty thousand, thirteen".