12118961 has 2 divisors, whose sum is σ = 12118962. Its totient is φ = 12118960.

The previous prime is 12118933. The next prime is 12118969. The reversal of 12118961 is 16981121.

12118961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 1600 = 3481^2 + 40^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12118961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12118969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6059480 + 6059481.

It is an arithmetic number, because the mean of its divisors is an integer number (6059481).

Almost surely, 2^12118961 is an apocalyptic number.

It is an amenable number.

12118961 is a deficient number, since it is larger than the sum of its proper divisors (1).

12118961 is an equidigital number, since it uses as much as digits as its factorization.

12118961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 29.

The square root of 12118961 is about 3481.2298114316. The cubic root of 12118961 is about 229.6968975222.

The spelling of 12118961 in words is "twelve million, one hundred eighteen thousand, nine hundred sixty-one".