2216471 has 2 divisors, whose sum is σ = 2216472. Its totient is φ = 2216470.

The previous prime is 2216437. The next prime is 2216479. The reversal of 2216471 is 1746122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2216471 - 2¹⁸ = 1954327 is a prime.

It is a super-3 number, since 3×2216471³ = 32666861783494365333, which contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108235 + 1108236.

It is an arithmetic number, because the mean of its divisors is an integer number (1108236).

2^2216471 is an apocalyptic number.

2216471 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216471 is an equidigital number, since it uses as much as digits as its factorization.

2216471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 2216471 is about 1488.7817167067. The cubic root of 2216471 is about 130.3829144125.

The spelling of 2216471 in words is "two million, two hundred sixteen thousand, four hundred seventy-one".