210100212 has 72 divisors (see below), whose sum is σ = 642672576. Its totient is φ = 56496384.

The previous prime is 210100211. The next prime is 210100243. The reversal of 210100212 is 212001012.

210100212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 210100194 and 210100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100211) 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 23 ways as a sum of consecutive naturals, for example, 20238 + ... + 28805.

It is an arithmetic number, because the mean of its divisors is an integer number (8926008).

Almost surely, 2^210100212 is an apocalyptic number.

It is an amenable number.

210100212 is an abundant number, since it is smaller than the sum of its proper divisors (432572364).

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

210100212 is a wasteful number, since it uses less digits than its factorization.

210100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49077 (or 49072 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 210100212 is about 14494.8339762827. The cubic root of 210100212 is about 594.4867282261.

Adding to 210100212 its reverse (212001012), we get a palindrome (422101224).

The spelling of 210100212 in words is "two hundred ten million, one hundred thousand, two hundred twelve".