21033310013 has 8 divisors (see below), whose sum is σ = 21402372096. Its totient is φ = 20666270800.

The previous prime is 21033310009. The next prime is 21033310019. The reversal of 21033310013 is 31001333012.

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 21033310013 - 2² = 21033310009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21033309973 and 21033310000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033310019) 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, 484733 + ... + 526338.

It is an arithmetic number, because the mean of its divisors is an integer number (2675296512).

Almost surely, 2^21033310013 is an apocalyptic number.

It is an amenable number.

21033310013 is a deficient number, since it is larger than the sum of its proper divisors (369062083).

21033310013 is a wasteful number, since it uses less digits than its factorization.

21033310013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011435.

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

Adding to 21033310013 its reverse (31001333012), we get a palindrome (52034643025).

The spelling of 21033310013 in words is "twenty-one billion, thirty-three million, three hundred ten thousand, thirteen".