222011312 has 20 divisors (see below), whose sum is σ = 431281920. Its totient is φ = 110712768.

The previous prime is 222011291. The next prime is 222011353. The reversal of 222011312 is 213110222.

It is a happy number.

It is a super-2 number, since 2×222011312² = 98578045311922688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11987 + ... + 24242.

It is an arithmetic number, because the mean of its divisors is an integer number (21564096).

Almost surely, 2^222011312 is an apocalyptic number.

It is an amenable number.

222011312 is a deficient number, since it is larger than the sum of its proper divisors (209270608).

222011312 is a wasteful number, since it uses less digits than its factorization.

222011312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36620 (or 36614 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 222011312 is about 14900.0440267806. The cubic root of 222011312 is about 605.5151789680.

Adding to 222011312 its reverse (213110222), we get a palindrome (435121534).

The spelling of 222011312 in words is "two hundred twenty-two million, eleven thousand, three hundred twelve".