212112212120 has 16 divisors (see below), whose sum is σ = 477252477360. Its totient is φ = 84844884832.

The previous prime is 212112212071. The next prime is 212112212129. The reversal of 212112212120 is 21212211212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112212129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2651402612 + ... + 2651402691.

It is an arithmetic number, because the mean of its divisors is an integer number (29828279835).

Almost surely, 2^212112212120 is an apocalyptic number.

212112212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112212120 is an abundant number, since it is smaller than the sum of its proper divisors (265140265240).

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

212112212120 is a wasteful number, since it uses less digits than its factorization.

212112212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302805314 (or 5302805310 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212112212120 its reverse (21212211212), we get a palindrome (233324423332).

The spelling of 212112212120 in words is "two hundred twelve billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty".