11112161 has 2 divisors, whose sum is σ = 11112162. Its totient is φ = 11112160.

The previous prime is 11112149. The next prime is 11112193. The reversal of 11112161 is 16121111.

11112161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8014561 + 3097600 = 2831^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112161 - 2⁶ = 11112097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11112461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556080 + 5556081.

It is an arithmetic number, because the mean of its divisors is an integer number (5556081).

Almost surely, 2^11112161 is an apocalyptic number.

It is an amenable number.

11112161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112161 is an equidigital number, since it uses as much as digits as its factorization.

11112161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12, while the sum is 14.

The square root of 11112161 is about 3333.4908129467. The cubic root of 11112161 is about 223.1513447749.

Adding to 11112161 its reverse (16121111), we get a palindrome (27233272).

The spelling of 11112161 in words is "eleven million, one hundred twelve thousand, one hundred sixty-one".