12223641 has 8 divisors (see below), whose sum is σ = 16824064. Its totient is φ = 7886160.

The previous prime is 12223633. The next prime is 12223643. The reversal of 12223641 is 14632221.

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

It is not a de Polignac number, because 12223641 - 2³ = 12223633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12223643) 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 7 ways as a sum of consecutive naturals, for example, 65626 + ... + 65811.

It is an arithmetic number, because the mean of its divisors is an integer number (2103008).

Almost surely, 2^12223641 is an apocalyptic number.

It is an amenable number.

12223641 is a deficient number, since it is larger than the sum of its proper divisors (4600423).

12223641 is a wasteful number, since it uses less digits than its factorization.

12223641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131471.

The product of its digits is 576, while the sum is 21.

The square root of 12223641 is about 3496.2324007423. The cubic root of 12223641 is about 230.3563537054.

Adding to 12223641 its reverse (14632221), we get a palindrome (26855862).

The spelling of 12223641 in words is "twelve million, two hundred twenty-three thousand, six hundred forty-one".