2216001 has 8 divisors (see below), whose sum is σ = 3128544. Its totient is φ = 1390400.

The previous prime is 2215999. The next prime is 2216021. The reversal of 2216001 is 1006122.

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 2216001 - 2¹ = 2215999 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2216021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21675 + ... + 21776.

It is an arithmetic number, because the mean of its divisors is an integer number (391068).

2^2216001 is an apocalyptic number.

It is an amenable number.

2216001 is a deficient number, since it is larger than the sum of its proper divisors (912543).

2216001 is a wasteful number, since it uses less digits than its factorization.

2216001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43471.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2216001 is about 1488.6238611550. The cubic root of 2216001 is about 130.3736979144.

The spelling of 2216001 in words is "two million, two hundred sixteen thousand, one".