216105107 has 16 divisors (see below), whose sum is σ = 234124800. Its totient is φ = 198819360.

The previous prime is 216105103. The next prime is 216105119. The reversal of 216105107 is 701501612.

It is a cyclic number.

It is not a de Polignac number, because 216105107 - 2² = 216105103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216105101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123257 + ... + 124997.

It is an arithmetic number, because the mean of its divisors is an integer number (14632800).

Almost surely, 2^216105107 is an apocalyptic number.

216105107 is a deficient number, since it is larger than the sum of its proper divisors (18019693).

216105107 is a wasteful number, since it uses less digits than its factorization.

216105107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 216105107 is about 14700.5138345569. The cubic root of 216105107 is about 600.0973055148.

Adding to 216105107 its reverse (701501612), we get a palindrome (917606719).

The spelling of 216105107 in words is "two hundred sixteen million, one hundred five thousand, one hundred seven".