223221333217 has 2 divisors, whose sum is σ = 223221333218. Its totient is φ = 223221333216.

The previous prime is 223221333107. The next prime is 223221333221. The reversal of 223221333217 is 712333122322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205230744576 + 17990588641 = 453024^2 + 134129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223221333217 is a prime.

It is a super-3 number, since 3×223221333217³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223221337217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111610666608 + 111610666609.

It is an arithmetic number, because the mean of its divisors is an integer number (111610666609).

Almost surely, 2^223221333217 is an apocalyptic number.

It is an amenable number.

223221333217 is a deficient number, since it is larger than the sum of its proper divisors (1).

223221333217 is an equidigital number, since it uses as much as digits as its factorization.

223221333217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 31.

Adding to 223221333217 its reverse (712333122322), we get a palindrome (935554455539).

The spelling of 223221333217 in words is "two hundred twenty-three billion, two hundred twenty-one million, three hundred thirty-three thousand, two hundred seventeen".