12219143 has 4 divisors (see below), whose sum is σ = 12229800. Its totient is φ = 12208488.

The previous prime is 12219133. The next prime is 12219157. The reversal of 12219143 is 34191221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12219143 - 2⁴ = 12219127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368 + ... + 5981.

It is an arithmetic number, because the mean of its divisors is an integer number (3057450).

Almost surely, 2^12219143 is an apocalyptic number.

12219143 is a deficient number, since it is larger than the sum of its proper divisors (10657).

12219143 is an equidigital number, since it uses as much as digits as its factorization.

12219143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10656.

The product of its digits is 432, while the sum is 23.

The square root of 12219143 is about 3495.5890776806. The cubic root of 12219143 is about 230.3280950767.

The spelling of 12219143 in words is "twelve million, two hundred nineteen thousand, one hundred forty-three".