12047161 has 4 divisors (see below), whose sum is σ = 13768192. Its totient is φ = 10326132.

The previous prime is 12047149. The next prime is 12047173. The reversal of 12047161 is 16174021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16174021 = 17 ⋅951413.

It is an interprime number because it is at equal distance from previous prime (12047149) and next prime (12047173).

It is a cyclic number.

It is not a de Polignac number, because 12047161 - 2⁹ = 12046649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12047111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860505 + ... + 860518.

It is an arithmetic number, because the mean of its divisors is an integer number (3442048).

Almost surely, 2^12047161 is an apocalyptic number.

It is an amenable number.

12047161 is a deficient number, since it is larger than the sum of its proper divisors (1721031).

12047161 is an equidigital number, since it uses as much as digits as its factorization.

12047161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721030.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 12047161 is about 3470.9020441378. The cubic root of 12047161 is about 229.2423779519.

The spelling of 12047161 in words is "twelve million, forty-seven thousand, one hundred sixty-one".