1123213333217 has 2 divisors, whose sum is σ = 1123213333218. Its totient is φ = 1123213333216.

The previous prime is 1123213333213. The next prime is 1123213333219. The reversal of 1123213333217 is 7123333123211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080344044816 + 42869288401 = 1039396^2 + 207049^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123213333217 - 2² = 1123213333213 is a prime.

It is a super-3 number, since 3×1123213333217³ (a number of 37 digits) contains 333 as substring.

Together with 1123213333219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1123213333213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561606666608 + 561606666609.

It is an arithmetic number, because the mean of its divisors is an integer number (561606666609).

Almost surely, 2^{1123213333217} is an apocalyptic number.

It is an amenable number.

1123213333217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123213333217 is an equidigital number, since it uses as much as digits as its factorization.

1123213333217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

Adding to 1123213333217 its reverse (7123333123211), we get a palindrome (8246546456428).

The spelling of 1123213333217 in words is "one trillion, one hundred twenty-three billion, two hundred thirteen million, three hundred thirty-three thousand, two hundred seventeen".