112206181 has 2 divisors, whose sum is σ = 112206182. Its totient is φ = 112206180.

The previous prime is 112206169. The next prime is 112206203. The reversal of 112206181 is 181602211.

It is an a-pointer prime, because the next prime (112206203) can be obtained adding 112206181 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112148100 + 58081 = 10590^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 112206181 - 2¹⁹ = 111681893 is a prime.

It is a super-2 number, since 2×112206181² = 25180454109209522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112201181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56103090 + 56103091.

It is an arithmetic number, because the mean of its divisors is an integer number (56103091).

Almost surely, 2^112206181 is an apocalyptic number.

It is an amenable number.

112206181 is a deficient number, since it is larger than the sum of its proper divisors (1).

112206181 is an equidigital number, since it uses as much as digits as its factorization.

112206181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 112206181 is about 10592.7419018873. The cubic root of 112206181 is about 482.3240605275.

Adding to 112206181 its reverse (181602211), we get a palindrome (293808392).

The spelling of 112206181 in words is "one hundred twelve million, two hundred six thousand, one hundred eighty-one".