212100212 has 6 divisors (see below), whose sum is σ = 371175378. Its totient is φ = 106050104.

The previous prime is 212100193. The next prime is 212100241. The reversal of 212100212 is 212001212.

It is a happy number.

212100212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 187854436 + 24245776 = 13706^2 + 4924^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212100193 and 212100202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26512523 + ... + 26512530.

It is an arithmetic number, because the mean of its divisors is an integer number (61862563).

Almost surely, 2^212100212 is an apocalyptic number.

It is an amenable number.

212100212 is a deficient number, since it is larger than the sum of its proper divisors (159075166).

212100212 is a wasteful number, since it uses less digits than its factorization.

212100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53025057 (or 53025055 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 212100212 is about 14563.6606661924. The cubic root of 212100212 is about 596.3671333794.

Adding to 212100212 its reverse (212001212), we get a palindrome (424101424).

The spelling of 212100212 in words is "two hundred twelve million, one hundred thousand, two hundred twelve".