212112221220220 has 12 divisors (see below), whose sum is σ = 445435664562504. Its totient is φ = 84844888488080.

The previous prime is 212112221220167. The next prime is 212112221220239. The reversal of 212112221220220 is 22022122211212.

212112221220220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 212112221220191 and 212112221220200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5302805530486 + ... + 5302805530525.

It is an arithmetic number, because the mean of its divisors is an integer number (37119638713542).

Almost surely, 2^{212112221220220} is an apocalyptic number.

212112221220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112221220220 is an abundant number, since it is smaller than the sum of its proper divisors (233323443342284).

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

212112221220220 is a wasteful number, since it uses less digits than its factorization.

212112221220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605611061020 (or 10605611061018 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212112221220220 its reverse (22022122211212), we get a palindrome (234134343431432).

The spelling of 212112221220220 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty".