12286161 has 10 divisors (see below), whose sum is σ = 18353522. Its totient is φ = 8190720.

The previous prime is 12286147. The next prime is 12286171. The reversal of 12286161 is 16168221.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 342225 = 3456^2 + 585^2 .

It is not a de Polignac number, because 12286161 - 2⁷ = 12286033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12286171) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 75760 + ... + 75921.

Almost surely, 2^12286161 is an apocalyptic number.

It is an amenable number.

12286161 is a deficient number, since it is larger than the sum of its proper divisors (6067361).

12286161 is an equidigital number, since it uses as much as digits as its factorization.

12286161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151693 (or 151684 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 12286161 is about 3505.1620504621. The cubic root of 12286161 is about 230.7484189693.

The spelling of 12286161 in words is "twelve million, two hundred eighty-six thousand, one hundred sixty-one".