1122221110217 has 2 divisors, whose sum is σ = 1122221110218. Its totient is φ = 1122221110216.

The previous prime is 1122221110187. The next prime is 1122221110229. The reversal of 1122221110217 is 7120111222211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902368904761 + 219852205456 = 949931^2 + 468884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122221110217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122221110192 and 1122221110201.

It is not a weakly prime, because it can be changed into another prime (1122221110247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561110555108 + 561110555109.

It is an arithmetic number, because the mean of its divisors is an integer number (561110555109).

Almost surely, 2^{1122221110217} is an apocalyptic number.

It is an amenable number.

1122221110217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122221110217 is an equidigital number, since it uses as much as digits as its factorization.

1122221110217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 1122221110217 its reverse (7120111222211), we get a palindrome (8242332332428).

The spelling of 1122221110217 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred ten thousand, two hundred seventeen".