11112202211161 has 2 divisors, whose sum is σ = 11112202211162. Its totient is φ = 11112202211160.

The previous prime is 11112202211027. The next prime is 11112202211189. The reversal of 11112202211161 is 16111220221111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9929078289936 + 1183123921225 = 3151044^2 + 1087715^2 .

It is an emirp because it is prime and its reverse (16111220221111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11112202211161 - 2³⁵ = 11077842472793 is a prime.

It is not a weakly prime, because it can be changed into another prime (11112202271161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556101105580 + 5556101105581.

It is an arithmetic number, because the mean of its divisors is an integer number (5556101105581).

Almost surely, 2^{11112202211161} is an apocalyptic number.

It is an amenable number.

11112202211161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112202211161 is an equidigital number, since it uses as much as digits as its factorization.

11112202211161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 22.

Adding to 11112202211161 its reverse (16111220221111), we get a palindrome (27223422432272).

The spelling of 11112202211161 in words is "eleven trillion, one hundred twelve billion, two hundred two million, two hundred eleven thousand, one hundred sixty-one".