112211161 has 2 divisors, whose sum is σ = 112211162. Its totient is φ = 112211160.

The previous prime is 112211149. The next prime is 112211167. The reversal of 112211161 is 161112211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86769225 + 25441936 = 9315^2 + 5044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112211161 is a prime.

It is not a weakly prime, because it can be changed into another prime (112211167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56105580 + 56105581.

It is an arithmetic number, because the mean of its divisors is an integer number (56105581).

Almost surely, 2^112211161 is an apocalyptic number.

It is an amenable number.

112211161 is a deficient number, since it is larger than the sum of its proper divisors (1).

112211161 is an equidigital number, since it uses as much as digits as its factorization.

112211161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 16.

The square root of 112211161 is about 10592.9769658958. The cubic root of 112211161 is about 482.3311960176.

Adding to 112211161 its reverse (161112211), we get a palindrome (273323372).

The spelling of 112211161 in words is "one hundred twelve million, two hundred eleven thousand, one hundred sixty-one".