12280161 has 8 divisors (see below), whose sum is σ = 16397920. Its totient is φ = 8174592.

The previous prime is 12280157. The next prime is 12280181. The reversal of 12280161 is 16108221.

12280161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12280161 - 2² = 12280157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12280111) 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, 355 + ... + 4968.

It is an arithmetic number, because the mean of its divisors is an integer number (2049740).

Almost surely, 2^12280161 is an apocalyptic number.

It is an amenable number.

12280161 is a deficient number, since it is larger than the sum of its proper divisors (4117759).

12280161 is an equidigital number, since it uses as much as digits as its factorization.

12280161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6095.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 12280161 is about 3504.3060654001. The cubic root of 12280161 is about 230.7108505227.

Adding to 12280161 its reverse (16108221), we get a palindrome (28388382).

The spelling of 12280161 in words is "twelve million, two hundred eighty thousand, one hundred sixty-one".