22133312221 has 2 divisors, whose sum is σ = 22133312222. Its totient is φ = 22133312220.

The previous prime is 22133312207. The next prime is 22133312237. The reversal of 22133312221 is 12221333122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15553831225 + 6579480996 = 124715^2 + 81114^2 .

It is a cyclic number.

It is not a de Polignac number, because 22133312221 - 2⁷ = 22133312093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22133312192 and 22133312201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22133312251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11066656110 + 11066656111.

It is an arithmetic number, because the mean of its divisors is an integer number (11066656111).

Almost surely, 2^22133312221 is an apocalyptic number.

It is an amenable number.

22133312221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22133312221 is an equidigital number, since it uses as much as digits as its factorization.

22133312221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

Adding to 22133312221 its reverse (12221333122), we get a palindrome (34354645343).

The spelling of 22133312221 in words is "twenty-two billion, one hundred thirty-three million, three hundred twelve thousand, two hundred twenty-one".