216112104 has 64 divisors (see below), whose sum is σ = 646497600. Its totient is φ = 66495168.

The previous prime is 216112093. The next prime is 216112121. The reversal of 216112104 is 401211612.

Added to its reverse (401211612) it gives a square (617323716 = 24846²).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35674 + ... + 41289.

It is an arithmetic number, because the mean of its divisors is an integer number (10101525).

Almost surely, 2^216112104 is an apocalyptic number.

216112104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

216112104 is an abundant number, since it is smaller than the sum of its proper divisors (430385496).

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

216112104 is a wasteful number, since it uses less digits than its factorization.

216112104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76991 (or 76981 counting only the distinct ones).

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

The square root of 216112104 is about 14700.7518175092. The cubic root of 216112104 is about 600.1037820478.

Adding to 216112104 its reverse (401211612), we get a palindrome (617323716).

The spelling of 216112104 in words is "two hundred sixteen million, one hundred twelve thousand, one hundred four".