21331300211 has 16 divisors (see below), whose sum is σ = 23261519904. Its totient is φ = 19442674944.

The previous prime is 21331300201. The next prime is 21331300213. The reversal of 21331300211 is 11200313312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21331300211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21331300211.

It is not an unprimeable number, because it can be changed into a prime (21331300213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2560625 + ... + 2568941.

It is an arithmetic number, because the mean of its divisors is an integer number (1453844994).

Almost surely, 2^21331300211 is an apocalyptic number.

21331300211 is a deficient number, since it is larger than the sum of its proper divisors (1930219693).

21331300211 is a wasteful number, since it uses less digits than its factorization.

21331300211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10790.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21331300211 its reverse (11200313312), we get a palindrome (32531613523).

The spelling of 21331300211 in words is "twenty-one billion, three hundred thirty-one million, three hundred thousand, two hundred eleven".