12022543 has 4 divisors (see below), whose sum is σ = 12947368. Its totient is φ = 11097720.

The previous prime is 12022531. The next prime is 12022561. The reversal of 12022543 is 34522021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34522021 = 59 ⋅585119.

It is a cyclic number.

It is not a de Polignac number, because 12022543 - 2⁵ = 12022511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12022543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022243) 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, 462393 + ... + 462418.

It is an arithmetic number, because the mean of its divisors is an integer number (3236842).

Almost surely, 2^12022543 is an apocalyptic number.

12022543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12022543 is a deficient number, since it is larger than the sum of its proper divisors (924825).

12022543 is an equidigital number, since it uses as much as digits as its factorization.

12022543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924824.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 12022543 is about 3467.3538902166. The cubic root of 12022543 is about 229.0861215711.

Adding to 12022543 its reverse (34522021), we get a palindrome (46544564).

The spelling of 12022543 in words is "twelve million, twenty-two thousand, five hundred forty-three".