2215321 has 8 divisors (see below), whose sum is σ = 2363904. Its totient is φ = 2068800.

The previous prime is 2215319. The next prime is 2215327. The reversal of 2215321 is 1235122.

2215321 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 a cyclic number.

It is not a de Polignac number, because 2215321 - 2¹ = 2215319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2215295 and 2215304.

It is not an unprimeable number, because it can be changed into a prime (2215327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2136 + ... + 2998.

It is an arithmetic number, because the mean of its divisors is an integer number (295488).

2^2215321 is an apocalyptic number.

It is an amenable number.

2215321 is a deficient number, since it is larger than the sum of its proper divisors (148583).

2215321 is a wasteful number, since it uses less digits than its factorization.

2215321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its digits is 120, while the sum is 16.

The square root of 2215321 is about 1488.3954447659. The cubic root of 2215321 is about 130.3603610997.

The spelling of 2215321 in words is "two million, two hundred fifteen thousand, three hundred twenty-one".