216122 has 4 divisors (see below), whose sum is σ = 324186. Its totient is φ = 108060.

The previous prime is 216119. The next prime is 216127. The reversal of 216122 is 221612.

216122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 167281 + 48841 = 409^2 + 221^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216097 and 216106.

It is not an unprimeable number, because it can be changed into a prime (216127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54029 + ... + 54032.

2²¹⁶¹²² is an apocalyptic number.

216122 is a deficient number, since it is larger than the sum of its proper divisors (108064).

216122 is a wasteful number, since it uses less digits than its factorization.

216122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108063.

The product of its digits is 48, while the sum is 14.

The square root of 216122 is about 464.8892341193. The cubic root of 216122 is about 60.0112941702.

Adding to 216122 its reverse (221612), we get a palindrome (437734).

The spelling of 216122 in words is "two hundred sixteen thousand, one hundred twenty-two".