12276321 has 8 divisors (see below), whose sum is σ = 16400544. Its totient is φ = 8168160.

The previous prime is 12276317. The next prime is 12276331. The reversal of 12276321 is 12367221.

12276321 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 12276321 - 2² = 12276317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12276291 and 12276300.

It is not an unprimeable number, because it can be changed into a prime (12276331) 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, 2100 + ... + 5381.

It is an arithmetic number, because the mean of its divisors is an integer number (2050068).

Almost surely, 2^12276321 is an apocalyptic number.

It is an amenable number.

12276321 is a deficient number, since it is larger than the sum of its proper divisors (4124223).

12276321 is an equidigital number, since it uses as much as digits as its factorization.

12276321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8031.

The product of its digits is 1008, while the sum is 24.

The square root of 12276321 is about 3503.7581252136. The cubic root of 12276321 is about 230.6868002945.

The spelling of 12276321 in words is "twelve million, two hundred seventy-six thousand, three hundred twenty-one".