216111101 has 8 divisors (see below), whose sum is σ = 217464000. Its totient is φ = 214763040.

The previous prime is 216111097. The next prime is 216111107. The reversal of 216111101 is 101111612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216111101 - 2² = 216111097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216111107) 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, 126350 + ... + 128048.

It is an arithmetic number, because the mean of its divisors is an integer number (27183000).

Almost surely, 2^216111101 is an apocalyptic number.

It is an amenable number.

216111101 is a deficient number, since it is larger than the sum of its proper divisors (1352899).

216111101 is a wasteful number, since it uses less digits than its factorization.

216111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419.

The product of its (nonzero) digits is 12, while the sum is 14.

The square root of 216111101 is about 14700.7177035681. The cubic root of 216111101 is about 600.1028536638.

Adding to 216111101 its reverse (101111612), we get a palindrome (317222713).

The spelling of 216111101 in words is "two hundred sixteen million, one hundred eleven thousand, one hundred one".