222420244 has 12 divisors (see below), whose sum is σ = 398729268. Its totient is φ = 108497600.

The previous prime is 222420241. The next prime is 222420259. The reversal of 222420244 is 442024222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40170244 + 182250000 = 6338^2 + 13500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222420241) 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 3 ways as a sum of consecutive naturals, for example, 677947 + ... + 678274.

It is an arithmetic number, because the mean of its divisors is an integer number (33227439).

Almost surely, 2^222420244 is an apocalyptic number.

It is an amenable number.

222420244 is a deficient number, since it is larger than the sum of its proper divisors (176309024).

222420244 is a wasteful number, since it uses less digits than its factorization.

222420244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356266 (or 1356264 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 222420244 is about 14913.7602233642. The cubic root of 222420244 is about 605.8867255884.

Adding to 222420244 its reverse (442024222), we get a palindrome (664444466).

The spelling of 222420244 in words is "two hundred twenty-two million, four hundred twenty thousand, two hundred forty-four".