11112222221117 has 2 divisors, whose sum is σ = 11112222221118. Its totient is φ = 11112222221116.

The previous prime is 11112222221053. The next prime is 11112222221119. The reversal of 11112222221117 is 71112222221111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10897254607801 + 214967613316 = 3301099^2 + 463646^2 .

It is an emirp because it is prime and its reverse (71112222221111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11112222221117 - 2⁶ = 11112222221053 is a prime.

Together with 11112222221119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112222221119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556111110558 + 5556111110559.

It is an arithmetic number, because the mean of its divisors is an integer number (5556111110559).

Almost surely, 2^{11112222221117} is an apocalyptic number.

It is an amenable number.

11112222221117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112222221117 is an equidigital number, since it uses as much as digits as its factorization.

11112222221117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 26.

Adding to 11112222221117 its reverse (71112222221111), we get a palindrome (82224444442228).

The spelling of 11112222221117 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred seventeen".