12003161 has 2 divisors, whose sum is σ = 12003162. Its totient is φ = 12003160.

The previous prime is 12003127. The next prime is 12003179. The reversal of 12003161 is 16130021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11689561 + 313600 = 3419^2 + 560^2 .

It is an emirp because it is prime and its reverse (16130021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12003161 - 2⁶ = 12003097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12003191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001580 + 6001581.

It is an arithmetic number, because the mean of its divisors is an integer number (6001581).

Almost surely, 2^12003161 is an apocalyptic number.

It is an amenable number.

12003161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003161 is an equidigital number, since it uses as much as digits as its factorization.

12003161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 12003161 is about 3464.5578361459. The cubic root of 12003161 is about 228.9629491998.

Adding to 12003161 its reverse (16130021), we get a palindrome (28133182).

The spelling of 12003161 in words is "twelve million, three thousand, one hundred sixty-one".