212212120 has 16 divisors (see below), whose sum is σ = 477477360. Its totient is φ = 84884832.

The previous prime is 212212093. The next prime is 212212123. The reversal of 212212120 is 21212212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212212120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212123) 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, 2652612 + ... + 2652691.

It is an arithmetic number, because the mean of its divisors is an integer number (29842335).

Almost surely, 2^212212120 is an apocalyptic number.

212212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212120 is an abundant number, since it is smaller than the sum of its proper divisors (265265240).

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

212212120 is a wasteful number, since it uses less digits than its factorization.

212212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305314 (or 5305310 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 212212120 is about 14567.5021880898. The cubic root of 212212120 is about 596.4719997199.

Adding to 212212120 its reverse (21212212), we get a palindrome (233424332).

The spelling of 212212120 in words is "two hundred twelve million, two hundred twelve thousand, one hundred twenty".