22213443 has 16 divisors (see below), whose sum is σ = 34119680. Its totient is φ = 12591936.

The previous prime is 22213439. The next prime is 22213463. The reversal of 22213443 is 34431222.

It is not a de Polignac number, because 22213443 - 2² = 22213439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (22213403) 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, 1498 + ... + 6831.

It is an arithmetic number, because the mean of its divisors is an integer number (2132480).

Almost surely, 2^22213443 is an apocalyptic number.

22213443 is a deficient number, since it is larger than the sum of its proper divisors (11906237).

22213443 is a wasteful number, since it uses less digits than its factorization.

22213443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8466.

The product of its digits is 1152, while the sum is 21.

The square root of 22213443 is about 4713.1139387882. The cubic root of 22213443 is about 281.1071934766.

Adding to 22213443 its reverse (34431222), we get a palindrome (56644665).

The spelling of 22213443 in words is "twenty-two million, two hundred thirteen thousand, four hundred forty-three".