21233310211 has 2 divisors, whose sum is σ = 21233310212. Its totient is φ = 21233310210.

The previous prime is 21233310193. The next prime is 21233310227. The reversal of 21233310211 is 11201333212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21233310211 - 2¹³ = 21233302019 is a prime.

It is not a weakly prime, because it can be changed into another prime (21233310611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616655105 + 10616655106.

It is an arithmetic number, because the mean of its divisors is an integer number (10616655106).

Almost surely, 2^21233310211 is an apocalyptic number.

21233310211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233310211 is an equidigital number, since it uses as much as digits as its factorization.

21233310211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21233310211 its reverse (11201333212), we get a palindrome (32434643423).

The spelling of 21233310211 in words is "twenty-one billion, two hundred thirty-three million, three hundred ten thousand, two hundred eleven".