21303011223211 has 2 divisors, whose sum is σ = 21303011223212. Its totient is φ = 21303011223210.

The previous prime is 21303011223203. The next prime is 21303011223217. The reversal of 21303011223211 is 11232211030312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21303011223211 - 2³ = 21303011223203 is a prime.

It is not a weakly prime, because it can be changed into another prime (21303011223217) 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 as a sum of consecutive naturals, namely, 10651505611605 + 10651505611606.

It is an arithmetic number, because the mean of its divisors is an integer number (10651505611606).

Almost surely, 2^{21303011223211} is an apocalyptic number.

21303011223211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303011223211 is an equidigital number, since it uses as much as digits as its factorization.

21303011223211 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21303011223211 its reverse (11232211030312), we get a palindrome (32535222253523).

The spelling of 21303011223211 in words is "twenty-one trillion, three hundred three billion, eleven million, two hundred twenty-three thousand, two hundred eleven".