222115712 has 64 divisors (see below), whose sum is σ = 544639200. Its totient is φ = 87865344.

The previous prime is 222115711. The next prime is 222115717. The reversal of 222115712 is 217511222.

222115712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222115711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2114 + ... + 21182.

Almost surely, 2^222115712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222115712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272319600).

222115712 is an abundant number, since it is smaller than the sum of its proper divisors (322523488).

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

222115712 is a wasteful number, since it uses less digits than its factorization.

222115712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19103 (or 19091 counting only the distinct ones).

The product of its digits is 560, while the sum is 23.

The square root of 222115712 is about 14903.5469603715. The cubic root of 222115712 is about 605.6100778535.

Adding to 222115712 its reverse (217511222), we get a palindrome (439626934).

The spelling of 222115712 in words is "two hundred twenty-two million, one hundred fifteen thousand, seven hundred twelve".