21337303213 has 8 divisors (see below), whose sum is σ = 21701259360. Its totient is φ = 20973424080.

The previous prime is 21337303201. The next prime is 21337303237. The reversal of 21337303213 is 31230373312.

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 21337303213 - 2⁵ = 21337303181 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 (21337303513) 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, 957231 + ... + 979267.

It is an arithmetic number, because the mean of its divisors is an integer number (2712657420).

Almost surely, 2^21337303213 is an apocalyptic number.

It is an amenable number.

21337303213 is a deficient number, since it is larger than the sum of its proper divisors (363956147).

21337303213 is a wasteful number, since it uses less digits than its factorization.

21337303213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38507.

The product of its (nonzero) digits is 6804, while the sum is 28.

Adding to 21337303213 its reverse (31230373312), we get a palindrome (52567676525).

The spelling of 21337303213 in words is "twenty-one billion, three hundred thirty-seven million, three hundred three thousand, two hundred thirteen".