212118120 has 192 divisors, whose sum is σ = 723340800. Its totient is φ = 53844480.

The previous prime is 212118119. The next prime is 212118131. The reversal of 212118120 is 21811212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212118093 and 212118102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 926166 + ... + 926394.

It is an arithmetic number, because the mean of its divisors is an integer number (3767400).

Almost surely, 2^212118120 is an apocalyptic number.

212118120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212118120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361670400).

212118120 is an abundant number, since it is smaller than the sum of its proper divisors (511222680).

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

212118120 is a wasteful number, since it uses less digits than its factorization.

212118120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 212118120 is about 14564.2754711657. The cubic root of 212118120 is about 596.3839170214.

Adding to 212118120 its reverse (21811212), we get a palindrome (233929332).

The spelling of 212118120 in words is "two hundred twelve million, one hundred eighteen thousand, one hundred twenty".