21222323267 has 2 divisors, whose sum is σ = 21222323268. Its totient is φ = 21222323266.

The previous prime is 21222323207. The next prime is 21222323293. The reversal of 21222323267 is 76232322212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21222323267 - 2¹⁸ = 21222061123 is a prime.

It is not a weakly prime, because it can be changed into another prime (21222323207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611161633 + 10611161634.

It is an arithmetic number, because the mean of its divisors is an integer number (10611161634).

Almost surely, 2^21222323267 is an apocalyptic number.

21222323267 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222323267 is an equidigital number, since it uses as much as digits as its factorization.

21222323267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 32.

Adding to 21222323267 its reverse (76232322212), we get a palindrome (97454645479).

The spelling of 21222323267 in words is "twenty-one billion, two hundred twenty-two million, three hundred twenty-three thousand, two hundred sixty-seven".