2197321 has 8 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 1861728.

The previous prime is 2197309. The next prime is 2197333. The reversal of 2197321 is 1237912.

It is an interprime number because it is at equal distance from previous prime (2197309) and next prime (2197333).

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 2197321 - 2⁵ = 2197289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2197361) 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, 1141 + ... + 2386.

It is an arithmetic number, because the mean of its divisors is an integer number (317520).

2^2197321 is an apocalyptic number.

It is an amenable number.

2197321 is a deficient number, since it is larger than the sum of its proper divisors (342839).

2197321 is an equidigital number, since it uses as much as digits as its factorization.

2197321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623.

The product of its digits is 756, while the sum is 25.

The square root of 2197321 is about 1482.3363316063. The cubic root of 2197321 is about 130.0063310526.

The spelling of 2197321 in words is "two million, one hundred ninety-seven thousand, three hundred twenty-one".