201111216 has 40 divisors (see below), whose sum is σ = 520060464. Its totient is φ = 66969600.

The previous prime is 201111161. The next prime is 201111217. The reversal of 201111216 is 612111102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201111195 and 201111204.

It is not an unprimeable number, because it can be changed into a prime (201111217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75540 + ... + 78156.

Almost surely, 2^201111216 is an apocalyptic number.

It is an amenable number.

201111216 is an abundant number, since it is smaller than the sum of its proper divisors (318949248).

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

201111216 is a wasteful number, since it uses less digits than its factorization.

201111216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229 (or 4223 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 201111216 is about 14181.3686222452. The cubic root of 201111216 is about 585.8846196985.

Adding to 201111216 its reverse (612111102), we get a palindrome (813222318).

The spelling of 201111216 in words is "two hundred one million, one hundred eleven thousand, two hundred sixteen".