2021143 has 2 divisors, whose sum is σ = 2021144. Its totient is φ = 2021142.

The previous prime is 2021137. The next prime is 2021167. The reversal of 2021143 is 3411202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021143 - 2¹³ = 2012951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010571 + 1010572.

It is an arithmetic number, because the mean of its divisors is an integer number (1010572).

2^2021143 is an apocalyptic number.

2021143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021143 is an equidigital number, since it uses as much as digits as its factorization.

2021143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2021143 is about 1421.6690894860. The cubic root of 2021143 is about 126.4345247984.

Adding to 2021143 its reverse (3411202), we get a palindrome (5432345).

The spelling of 2021143 in words is "two million, twenty-one thousand, one hundred forty-three".