222440012 has 12 divisors (see below), whose sum is σ = 393283800. Its totient is φ = 110073216.

The previous prime is 222440003. The next prime is 222440017. The reversal of 222440012 is 210044222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222440017) 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 3 ways as a sum of consecutive naturals, for example, 286262 + ... + 287037.

It is an arithmetic number, because the mean of its divisors is an integer number (32773650).

Almost surely, 2^222440012 is an apocalyptic number.

It is an amenable number.

222440012 is a deficient number, since it is larger than the sum of its proper divisors (170843788).

222440012 is a wasteful number, since it uses less digits than its factorization.

222440012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573400 (or 573398 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 222440012 is about 14914.4229522969. The cubic root of 222440012 is about 605.9046748148.

Adding to 222440012 its reverse (210044222), we get a palindrome (432484234).

The spelling of 222440012 in words is "two hundred twenty-two million, four hundred forty thousand, twelve".