12001161 has 8 divisors (see below), whose sum is σ = 16303680. Its totient is φ = 7849712.

The previous prime is 12001159. The next prime is 12001163. The reversal of 12001161 is 16110021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12001159) and next prime (12001163).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12001161 - 2¹ = 12001159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12001163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37581 + ... + 37898.

It is an arithmetic number, because the mean of its divisors is an integer number (2037960).

Almost surely, 2^12001161 is an apocalyptic number.

It is an amenable number.

12001161 is a deficient number, since it is larger than the sum of its proper divisors (4302519).

12001161 is an equidigital number, since it uses as much as digits as its factorization.

12001161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75535.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 12001161 is about 3464.2691870003. The cubic root of 12001161 is about 228.9502316794.

Adding to 12001161 its reverse (16110021), we get a palindrome (28111182).

The spelling of 12001161 in words is "twelve million, one thousand, one hundred sixty-one".