11123223217 has 2 divisors, whose sum is σ = 11123223218. Its totient is φ = 11123223216.

The previous prime is 11123223203. The next prime is 11123223247. The reversal of 11123223217 is 71232232111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9478190736 + 1645032481 = 97356^2 + 40559^2 .

It is a cyclic number.

It is not a de Polignac number, because 11123223217 - 2¹⁹ = 11122698929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11123223191 and 11123223200.

It is not a weakly prime, because it can be changed into another prime (11123223247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561611608 + 5561611609.

It is an arithmetic number, because the mean of its divisors is an integer number (5561611609).

Almost surely, 2^11123223217 is an apocalyptic number.

It is an amenable number.

11123223217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123223217 is an equidigital number, since it uses as much as digits as its factorization.

11123223217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

Adding to 11123223217 its reverse (71232232111), we get a palindrome (82355455328).

The spelling of 11123223217 in words is "eleven billion, one hundred twenty-three million, two hundred twenty-three thousand, two hundred seventeen".