12041110161 has 20 divisors (see below), whose sum is σ = 18146531172. Its totient is φ = 7956361728.

The previous prime is 12041110139. The next prime is 12041110163. The reversal of 12041110161 is 16101114021.

It can be written as a sum of positive squares in 2 ways, for example, as 3587411025 + 8453699136 = 59895^2 + 91944^2 .

It is not a de Polignac number, because 12041110161 - 2⁵ = 12041110129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12041110163) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 648616 + ... + 666921.

Almost surely, 2^12041110161 is an apocalyptic number.

It is an amenable number.

12041110161 is a deficient number, since it is larger than the sum of its proper divisors (6105421011).

12041110161 is a wasteful number, since it uses less digits than its factorization.

12041110161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315662 (or 1315653 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12041110161 its reverse (16101114021), we get a palindrome (28142224182).

The spelling of 12041110161 in words is "twelve billion, forty-one million, one hundred ten thousand, one hundred sixty-one".