222220312 has 16 divisors (see below), whose sum is σ = 419319360. Its totient is φ = 110401824.

The previous prime is 222220309. The next prime is 222220331. The reversal of 222220312 is 213022222.

It is a super-3 number, since 3×222220312³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 87208 + ... + 89719.

It is an arithmetic number, because the mean of its divisors is an integer number (26207460).

Almost surely, 2^222220312 is an apocalyptic number.

It is an amenable number.

222220312 is a deficient number, since it is larger than the sum of its proper divisors (197099048).

222220312 is a wasteful number, since it uses less digits than its factorization.

222220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177090 (or 177086 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 222220312 is about 14907.0557790598. The cubic root of 222220312 is about 605.7051287203.

Adding to 222220312 its reverse (213022222), we get a palindrome (435242534).

The spelling of 222220312 in words is "two hundred twenty-two million, two hundred twenty thousand, three hundred twelve".