22444212 has 24 divisors (see below), whose sum is σ = 59851456. Its totient is φ = 6412608.

The previous prime is 22444211. The next prime is 22444223. The reversal of 22444212 is 21244422.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444211) 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 7 ways as a sum of consecutive naturals, for example, 133513 + ... + 133680.

Almost surely, 2^22444212 is an apocalyptic number.

It is an amenable number.

22444212 is an abundant number, since it is smaller than the sum of its proper divisors (37407244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22444212 is a wasteful number, since it uses less digits than its factorization.

22444212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267207 (or 267205 counting only the distinct ones).

The product of its digits is 1024, while the sum is 21.

The square root of 22444212 is about 4737.5322690194. The cubic root of 22444212 is about 282.0772888097.

Adding to 22444212 its reverse (21244422), we get a palindrome (43688634).

The spelling of 22444212 in words is "twenty-two million, four hundred forty-four thousand, two hundred twelve".