23221320211 has 2 divisors, whose sum is σ = 23221320212. Its totient is φ = 23221320210.

The previous prime is 23221320197. The next prime is 23221320271. The reversal of 23221320211 is 11202312232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23221320211 - 2⁵ = 23221320179 is a prime.

It is not a weakly prime, because it can be changed into another prime (23221320271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610660105 + 11610660106.

It is an arithmetic number, because the mean of its divisors is an integer number (11610660106).

Almost surely, 2^23221320211 is an apocalyptic number.

23221320211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221320211 is an equidigital number, since it uses as much as digits as its factorization.

23221320211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23221320211 its reverse (11202312232), we get a palindrome (34423632443).

The spelling of 23221320211 in words is "twenty-three billion, two hundred twenty-one million, three hundred twenty thousand, two hundred eleven".