212118 has 8 divisors (see below), whose sum is σ = 424248. Its totient is φ = 70704.

The previous prime is 212117. The next prime is 212123. The reversal of 212118 is 811212.

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

212118 is an admirable number.

It is a super-4 number, since 4×212118⁴ (a number of 22 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212097 and 212106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17671 + ... + 17682.

It is an arithmetic number, because the mean of its divisors is an integer number (53031).

2²¹²¹¹⁸ is an apocalyptic number.

212118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212118 is a wasteful number, since it uses less digits than its factorization.

212118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35358.

The product of its digits is 32, while the sum is 15.

The square root of 212118 is about 460.5626993147. The cubic root of 212118 is about 59.6383804559.

The spelling of 212118 in words is "two hundred twelve thousand, one hundred eighteen".