229212 has 18 divisors (see below), whose sum is σ = 579488. Its totient is φ = 76392.

The previous prime is 229199. The next prime is 229213. The reversal of 229212 is 212922.

229212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 229212.

It is not an unprimeable number, because it can be changed into a prime (229213) by changing a digit.

229212 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3148 + ... + 3219.

2²²⁹²¹² is an apocalyptic number.

It is an amenable number.

229212 is an abundant number, since it is smaller than the sum of its proper divisors (350276).

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

229212 is a wasteful number, since it uses less digits than its factorization.

229212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377 (or 6372 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 229212 is about 478.7609006592. The cubic root of 229212 is about 61.1992054235.

Subtracting from 229212 its reverse (212922), we obtain a triangular number (16290 = T₁₈₀).

It can be divided in two parts, 2292 and 12, that added together give a square (2304 = 48²).

The spelling of 229212 in words is "two hundred twenty-nine thousand, two hundred twelve".