21302002211 has 12 divisors (see below), whose sum is σ = 25186111200. Its totient is φ = 17959530960.

The previous prime is 21302002187. The next prime is 21302002223. The reversal of 21302002211 is 11220020312.

It is a happy number.

It is not a de Polignac number, because 21302002211 - 2¹⁸ = 21301740067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302002411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3560411 + ... + 3566388.

It is an arithmetic number, because the mean of its divisors is an integer number (2098842600).

Almost surely, 2^21302002211 is an apocalyptic number.

21302002211 is a deficient number, since it is larger than the sum of its proper divisors (3884108989).

21302002211 is an equidigital number, since it uses as much as digits as its factorization.

21302002211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7126874 (or 7126867 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21302002211 its reverse (11220020312), we get a palindrome (32522022523).

The spelling of 21302002211 in words is "twenty-one billion, three hundred two million, two thousand, two hundred eleven".