100212 has 24 divisors (see below), whose sum is σ = 267456. Its totient is φ = 28608.

The previous prime is 100207. The next prime is 100213. The reversal of 100212 is 212001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a self number, because there is not a number n which added to its sum of digits gives 100212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (11144).

2¹⁰⁰²¹² is an apocalyptic number.

100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100212 is an abundant number, since it is smaller than the sum of its proper divisors (167244).

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

100212 is a wasteful number, since it uses less digits than its factorization.

100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 100212 is about 316.5627899801. The cubic root of 100212 is about 46.4486657454.

Adding to 100212 its reverse (212001), we get a palindrome (312213).

The spelling of 100212 in words is "one hundred thousand, two hundred twelve", and thus it is an iban number.