222211116 has 18 divisors (see below), whose sum is σ = 561700412. Its totient is φ = 74070360.

The previous prime is 222211081. The next prime is 222211117. The reversal of 222211116 is 611112222.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222211117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3086230 + ... + 3086301.

Almost surely, 2^222211116 is an apocalyptic number.

It is an amenable number.

222211116 is an abundant number, since it is smaller than the sum of its proper divisors (339489296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222211116 is a wasteful number, since it uses less digits than its factorization.

222211116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6172541 (or 6172536 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 222211116 is about 14906.7473313262. The cubic root of 222211116 is about 605.6967734367.

Adding to 222211116 its reverse (611112222), we get a palindrome (833323338).

The spelling of 222211116 in words is "two hundred twenty-two million, two hundred eleven thousand, one hundred sixteen".