12223445 has 16 divisors (see below), whose sum is σ = 15869952. Its totient is φ = 8984640.

The previous prime is 12223439. The next prime is 12223447. The reversal of 12223445 is 54432221.

It is a happy number.

It is not a de Polignac number, because 12223445 - 2⁴ = 12223429 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 12223445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223447) 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 15 ways as a sum of consecutive naturals, for example, 24650 + ... + 25140.

It is an arithmetic number, because the mean of its divisors is an integer number (991872).

Almost surely, 2^12223445 is an apocalyptic number.

It is an amenable number.

12223445 is a deficient number, since it is larger than the sum of its proper divisors (3646507).

12223445 is a wasteful number, since it uses less digits than its factorization.

12223445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its digits is 1920, while the sum is 23.

The square root of 12223445 is about 3496.2043704566. The cubic root of 12223445 is about 230.3551224824.

Adding to 12223445 its reverse (54432221), we get a palindrome (66655666).

The spelling of 12223445 in words is "twelve million, two hundred twenty-three thousand, four hundred forty-five".