12207143 has 4 divisors (see below), whose sum is σ = 13146168. Its totient is φ = 11268120.

The previous prime is 12207127. The next prime is 12207179. The reversal of 12207143 is 34170221.

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 12207143 - 2⁴ = 12207127 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 (12207193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469493 + ... + 469518.

It is an arithmetic number, because the mean of its divisors is an integer number (3286542).

Almost surely, 2^12207143 is an apocalyptic number.

12207143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12207143 is a deficient number, since it is larger than the sum of its proper divisors (939025).

12207143 is an equidigital number, since it uses as much as digits as its factorization.

12207143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939024.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12207143 is about 3493.8722071650. The cubic root of 12207143 is about 230.2526712814.

Adding to 12207143 its reverse (34170221), we get a palindrome (46377364).

The spelling of 12207143 in words is "twelve million, two hundred seven thousand, one hundred forty-three".