222112222011 has 16 divisors (see below), whose sum is σ = 332313119520. Its totient is φ = 146608725600.

The previous prime is 222112222009. The next prime is 222112222019. The reversal of 222112222011 is 110222211222.

It is a happy number.

It is not a de Polignac number, because 222112222011 - 2¹ = 222112222009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222112222019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40721920 + ... + 40727373.

It is an arithmetic number, because the mean of its divisors is an integer number (20769569970).

Almost surely, 2^222112222011 is an apocalyptic number.

222112222011 is a deficient number, since it is larger than the sum of its proper divisors (110200897509).

222112222011 is a wasteful number, since it uses less digits than its factorization.

222112222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81449403 (or 81449397 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222112222011 its reverse (110222211222), we get a palindrome (332334433233).

The spelling of 222112222011 in words is "two hundred twenty-two billion, one hundred twelve million, two hundred twenty-two thousand, eleven".