22213244 has 6 divisors (see below), whose sum is σ = 38873184. Its totient is φ = 11106620.

The previous prime is 22213183. The next prime is 22213259. The reversal of 22213244 is 44231222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2776652 + ... + 2776659.

It is an arithmetic number, because the mean of its divisors is an integer number (6478864).

Almost surely, 2^22213244 is an apocalyptic number.

It is an amenable number.

22213244 is a deficient number, since it is larger than the sum of its proper divisors (16659940).

22213244 is a wasteful number, since it uses less digits than its factorization.

22213244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553315 (or 5553313 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 22213244 is about 4713.0928274330. The cubic root of 22213244 is about 281.1063540375.

Adding to 22213244 its reverse (44231222), we get a palindrome (66444466).

The spelling of 22213244 in words is "twenty-two million, two hundred thirteen thousand, two hundred forty-four".