2216999 has 2 divisors, whose sum is σ = 2217000. Its totient is φ = 2216998.

The previous prime is 2216989. The next prime is 2217001. The reversal of 2216999 is 9996122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2216999 - 2⁸ = 2216743 is a prime.

It is a Sophie Germain prime.

Together with 2217001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108499 + 1108500.

It is an arithmetic number, because the mean of its divisors is an integer number (1108500).

2^2216999 is an apocalyptic number.

2216999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216999 is an equidigital number, since it uses as much as digits as its factorization.

2216999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 38.

The square root of 2216999 is about 1488.9590323444. The cubic root of 2216999 is about 130.3932667117.

The spelling of 2216999 in words is "two million, two hundred sixteen thousand, nine hundred ninety-nine".