22213250 has 16 divisors (see below), whose sum is σ = 41583672. Its totient is φ = 8885200.

The previous prime is 22213183. The next prime is 22213259. The reversal of 22213250 is 5231222.

It can be written as a sum of positive squares in 4 ways, for example, as 14523721 + 7689529 = 3811^2 + 2773^2 .

It is not an unprimeable number, because it can be changed into a prime (22213259) 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, 44177 + ... + 44676.

Almost surely, 2^22213250 is an apocalyptic number.

22213250 is a deficient number, since it is larger than the sum of its proper divisors (19370422).

22213250 is an equidigital number, since it uses as much as digits as its factorization.

22213250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88870 (or 88860 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22213250 is about 4713.0934639576. The cubic root of 22213250 is about 281.1063793473.

Adding to 22213250 its reverse (5231222), we get a palindrome (27444472).

The spelling of 22213250 in words is "twenty-two million, two hundred thirteen thousand, two hundred fifty".