2217143 has 2 divisors, whose sum is σ = 2217144. Its totient is φ = 2217142.

The previous prime is 2217113. The next prime is 2217181. The reversal of 2217143 is 3417122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2217143 - 2⁸ = 2216887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2217113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108571 + 1108572.

It is an arithmetic number, because the mean of its divisors is an integer number (1108572).

2^2217143 is an apocalyptic number.

2217143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2217143 is an equidigital number, since it uses as much as digits as its factorization.

2217143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 20.

The square root of 2217143 is about 1489.0073874901. The cubic root of 2217143 is about 130.3960897807.

It can be divided in two parts, 22 and 17143, that multiplied together give a triangular number (377146 = T₈₆₈).

The spelling of 2217143 in words is "two million, two hundred seventeen thousand, one hundred forty-three".