2222211111217 has 2 divisors, whose sum is σ = 2222211111218. Its totient is φ = 2222211111216.

The previous prime is 2222211111199. The next prime is 2222211111221. The reversal of 2222211111217 is 7121111122222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1832880037921 + 389331073296 = 1353839^2 + 623964^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222211111217 - 2³⁵ = 2187851372849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222211111191 and 2222211111200.

It is not a weakly prime, because it can be changed into another prime (2222211111017) 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, 1111105555608 + 1111105555609.

It is an arithmetic number, because the mean of its divisors is an integer number (1111105555609).

Almost surely, 2^{2222211111217} is an apocalyptic number.

It is an amenable number.

2222211111217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222211111217 is an equidigital number, since it uses as much as digits as its factorization.

2222211111217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 25.

Adding to 2222211111217 its reverse (7121111122222), we get a palindrome (9343322233439).

The spelling of 2222211111217 in words is "two trillion, two hundred twenty-two billion, two hundred eleven million, one hundred eleven thousand, two hundred seventeen".