111216872 has 24 divisors (see below), whose sum is σ = 225809190. Its totient is φ = 51330240.

The previous prime is 111216869. The next prime is 111216913. The reversal of 111216872 is 278612111.

It can be written as a sum of positive squares in 3 ways, for example, as 29964676 + 81252196 = 5474^2 + 9014^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39779 + ... + 42482.

Almost surely, 2^111216872 is an apocalyptic number.

It is an amenable number.

111216872 is an abundant number, since it is smaller than the sum of its proper divisors (114592318).

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

111216872 is a wasteful number, since it uses less digits than its factorization.

111216872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82293 (or 82276 counting only the distinct ones).

The product of its digits is 1344, while the sum is 29.

The square root of 111216872 is about 10545.9410201271. The cubic root of 111216872 is about 480.9023419950.

Adding to 111216872 its reverse (278612111), we get a palindrome (389828983).

The spelling of 111216872 in words is "one hundred eleven million, two hundred sixteen thousand, eight hundred seventy-two".