12822143 has 4 divisors (see below), whose sum is σ = 12838440. Its totient is φ = 12805848.

The previous prime is 12822133. The next prime is 12822151. The reversal of 12822143 is 34122821.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12822143 - 2⁶ = 12822079 is a prime.

It is a super-2 number, since 2×12822143² = 328814702224898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12822113) 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, 6905 + ... + 8562.

It is an arithmetic number, because the mean of its divisors is an integer number (3209610).

Almost surely, 2^12822143 is an apocalyptic number.

12822143 is a deficient number, since it is larger than the sum of its proper divisors (16297).

12822143 is an equidigital number, since it uses as much as digits as its factorization.

12822143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16296.

The product of its digits is 768, while the sum is 23.

The square root of 12822143 is about 3580.8020051380. The cubic root of 12822143 is about 234.0562299427.

Adding to 12822143 its reverse (34122821), we get a palindrome (46944964).

The spelling of 12822143 in words is "twelve million, eight hundred twenty-two thousand, one hundred forty-three".