12321091 has 8 divisors (see below), whose sum is σ = 12736944. Its totient is φ = 11911200.

The previous prime is 12321083. The next prime is 12321121. The reversal of 12321091 is 19012321.

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

It is a cyclic number.

It is not a de Polignac number, because 12321091 - 2³ = 12321083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12321011) 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, 2925 + ... + 5761.

It is an arithmetic number, because the mean of its divisors is an integer number (1592118).

Almost surely, 2^12321091 is an apocalyptic number.

12321091 is a deficient number, since it is larger than the sum of its proper divisors (415853).

12321091 is a wasteful number, since it uses less digits than its factorization.

12321091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 12321091 is about 3510.1411652525. The cubic root of 12321091 is about 230.9668874284.

The spelling of 12321091 in words is "twelve million, three hundred twenty-one thousand, ninety-one".