212143 has 4 divisors (see below), whose sum is σ = 224640. Its totient is φ = 199648.

The previous prime is 212141. The next prime is 212161. The reversal of 212143 is 341212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 212143 - 2¹ = 212141 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6223 + ... + 6256.

It is an arithmetic number, because the mean of its divisors is an integer number (56160).

2²¹²¹⁴³ is an apocalyptic number.

212143 is a deficient number, since it is larger than the sum of its proper divisors (12497).

212143 is a wasteful number, since it uses less digits than its factorization.

212143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12496.

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

The square root of 212143 is about 460.5898392279. The cubic root of 212143 is about 59.6407233357.

Adding to 212143 its reverse (341212), we get a palindrome (553355).

The spelling of 212143 in words is "two hundred twelve thousand, one hundred forty-three", and thus it is an iban number.