12221443 has 8 divisors (see below), whose sum is σ = 13347936. Its totient is φ = 11121600.

The previous prime is 12221431. The next prime is 12221449. The reversal of 12221443 is 34412221.

12221443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221443 - 2¹³ = 12213251 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 12221443.

It is not an unprimeable number, because it can be changed into a prime (12221449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5698 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (1668492).

Almost surely, 2^12221443 is an apocalyptic number.

12221443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12221443 is a deficient number, since it is larger than the sum of its proper divisors (1126493).

12221443 is a wasteful number, since it uses less digits than its factorization.

12221443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13325.

The product of its digits is 384, while the sum is 19.

The square root of 12221443 is about 3495.9180482385. The cubic root of 12221443 is about 230.3425456642.

Adding to 12221443 its reverse (34412221), we get a palindrome (46633664).

The spelling of 12221443 in words is "twelve million, two hundred twenty-one thousand, four hundred forty-three".