216207111202111 has 12 divisors (see below), whose sum is σ = 225156737284024. Its totient is φ = 207598369154400.

The previous prime is 216207111202097. The next prime is 216207111202151. The reversal of 216207111202111 is 111202111702612.

216207111202111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216207111202111 - 2³¹ = 216204963718463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216207111202111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216207111202151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 710022825 + ... + 710327266.

Almost surely, 2^{216207111202111} is an apocalyptic number.

216207111202111 is a deficient number, since it is larger than the sum of its proper divisors (8949626081913).

216207111202111 is a wasteful number, since it uses less digits than its factorization.

216207111202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420350330 (or 1420350301 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 28.

Adding to 216207111202111 its reverse (111202111702612), we get a palindrome (327409222904723).

It can be divided in two parts, 21620711 and 1202111, that added together give a palindrome (22822822).

The spelling of 216207111202111 in words is "two hundred sixteen trillion, two hundred seven billion, one hundred eleven million, two hundred two thousand, one hundred eleven".