2216611 has 2 divisors, whose sum is σ = 2216612. Its totient is φ = 2216610.

The previous prime is 2216609. The next prime is 2216629. The reversal of 2216611 is 1166122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2216611 - 2¹ = 2216609 is a prime.

Together with 2216609, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2916611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108305 + 1108306.

It is an arithmetic number, because the mean of its divisors is an integer number (1108306).

2^2216611 is an apocalyptic number.

2216611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216611 is an equidigital number, since it uses as much as digits as its factorization.

2216611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 2216611 is about 1488.8287342740. The cubic root of 2216611 is about 130.3856595004.

The spelling of 2216611 in words is "two million, two hundred sixteen thousand, six hundred eleven".