1122221022217 has 2 divisors, whose sum is σ = 1122221022218. Its totient is φ = 1122221022216.

The previous prime is 1122221022191. The next prime is 1122221022227. The reversal of 1122221022217 is 7122201222211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1120981207696 + 1239814521 = 1058764^2 + 35211^2 .

It is an emirp because it is prime and its reverse (7122201222211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1122221022217 - 2⁷ = 1122221022089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122221022191 and 1122221022200.

It is not a weakly prime, because it can be changed into another prime (1122221022227) 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, 561110511108 + 561110511109.

It is an arithmetic number, because the mean of its divisors is an integer number (561110511109).

Almost surely, 2^{1122221022217} is an apocalyptic number.

It is an amenable number.

1122221022217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122221022217 is an equidigital number, since it uses as much as digits as its factorization.

1122221022217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 1122221022217 its reverse (7122201222211), we get a palindrome (8244422244428).

The spelling of 1122221022217 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty-two thousand, two hundred seventeen".