22221321233 has 2 divisors, whose sum is σ = 22221321234. Its totient is φ = 22221321232.

The previous prime is 22221321229. The next prime is 22221321247. The reversal of 22221321233 is 33212312222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12376117504 + 9845203729 = 111248^2 + 99223^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221321233 - 2² = 22221321229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22221321199 and 22221321208.

It is not a weakly prime, because it can be changed into another prime (22221323233) 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 as a sum of consecutive naturals, namely, 11110660616 + 11110660617.

It is an arithmetic number, because the mean of its divisors is an integer number (11110660617).

Almost surely, 2^22221321233 is an apocalyptic number.

It is an amenable number.

22221321233 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221321233 is an equidigital number, since it uses as much as digits as its factorization.

22221321233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

Adding to 22221321233 its reverse (33212312222), we get a palindrome (55433633455).

The spelling of 22221321233 in words is "twenty-two billion, two hundred twenty-one million, three hundred twenty-one thousand, two hundred thirty-three".