21300333213 has 16 divisors (see below), whose sum is σ = 29940350976. Its totient is φ = 13449761520.

The previous prime is 21300333191. The next prime is 21300333227. The reversal of 21300333213 is 31233300312.

It is a de Polignac number, because none of the positive numbers 2^k-21300333213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21300333213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300333283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2432181 + ... + 2440922.

It is an arithmetic number, because the mean of its divisors is an integer number (1871271936).

Almost surely, 2^21300333213 is an apocalyptic number.

It is an amenable number.

21300333213 is a deficient number, since it is larger than the sum of its proper divisors (8640017763).

21300333213 is a wasteful number, since it uses less digits than its factorization.

21300333213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873184.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21300333213 its reverse (31233300312), we get a palindrome (52533633525).

The spelling of 21300333213 in words is "twenty-one billion, three hundred million, three hundred thirty-three thousand, two hundred thirteen".