2211220222117 has 2 divisors, whose sum is σ = 2211220222118. Its totient is φ = 2211220222116.

The previous prime is 2211220222063. The next prime is 2211220222121. The reversal of 2211220222117 is 7112220221122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2206633004676 + 4587217441 = 1485474^2 + 67729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211220222117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211220222091 and 2211220222100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211220222517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105610111058 + 1105610111059.

It is an arithmetic number, because the mean of its divisors is an integer number (1105610111059).

Almost surely, 2^{2211220222117} is an apocalyptic number.

It is an amenable number.

2211220222117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211220222117 is an equidigital number, since it uses as much as digits as its factorization.

2211220222117 is an evil number, because the sum of its binary digits is even.

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

Adding to 2211220222117 its reverse (7112220221122), we get a palindrome (9323440443239).

The spelling of 2211220222117 in words is "two trillion, two hundred eleven billion, two hundred twenty million, two hundred twenty-two thousand, one hundred seventeen".