216451112 has 16 divisors (see below), whose sum is σ = 406142100. Its totient is φ = 108146560.

The previous prime is 216451063. The next prime is 216451133. The reversal of 216451112 is 211154612.

It can be written as a sum of positive squares in 2 ways, for example, as 215091556 + 1359556 = 14666^2 + 1166^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2714 + ... + 20982.

Almost surely, 2^216451112 is an apocalyptic number.

It is an amenable number.

216451112 is a deficient number, since it is larger than the sum of its proper divisors (189690988).

216451112 is a wasteful number, since it uses less digits than its factorization.

216451112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19756 (or 19752 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 216451112 is about 14712.2775939010. The cubic root of 216451112 is about 600.4174058496.

The spelling of 216451112 in words is "two hundred sixteen million, four hundred fifty-one thousand, one hundred twelve".