212112100212 has 24 divisors (see below), whose sum is σ = 520977088800. Its totient is φ = 66982768416.

The previous prime is 212112100201. The next prime is 212112100229. The reversal of 212112100212 is 212001211212.

It is a super-4 number, since 4×212112100212⁴ (a number of 46 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212112100191 and 212112100200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465157887 + ... + 465158342.

It is an arithmetic number, because the mean of its divisors is an integer number (21707378700).

Almost surely, 2^212112100212 is an apocalyptic number.

It is an amenable number.

212112100212 is an abundant number, since it is smaller than the sum of its proper divisors (308864988588).

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

212112100212 is a wasteful number, since it uses less digits than its factorization.

212112100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930316255 (or 930316253 counting only the distinct ones).

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

Adding to 212112100212 its reverse (212001211212), we get a palindrome (424113311424).

The spelling of 212112100212 in words is "two hundred twelve billion, one hundred twelve million, one hundred thousand, two hundred twelve".