21300331212211 has 4 divisors (see below), whose sum is σ = 21307887203400. Its totient is φ = 21292775221024.

The previous prime is 21300331212203. The next prime is 21300331212227. The reversal of 21300331212211 is 11221213300312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21300331212211 - 2³ = 21300331212203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300331212271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3777991366 + ... + 3777997003.

It is an arithmetic number, because the mean of its divisors is an integer number (5326971800850).

Almost surely, 2^{21300331212211} is an apocalyptic number.

21300331212211 is a deficient number, since it is larger than the sum of its proper divisors (7555991189).

21300331212211 is an equidigital number, since it uses as much as digits as its factorization.

21300331212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555991188.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21300331212211 its reverse (11221213300312), we get a palindrome (32521544512523).

The spelling of 21300331212211 in words is "twenty-one trillion, three hundred billion, three hundred thirty-one million, two hundred twelve thousand, two hundred eleven".