212341212 has 18 divisors (see below), whose sum is σ = 536751488. Its totient is φ = 70780392.

The previous prime is 212341189. The next prime is 212341247. The reversal of 212341212 is 212143212.

It is a happy number.

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 an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2949148 + ... + 2949219.

Almost surely, 2^212341212 is an apocalyptic number.

It is an amenable number.

212341212 is an abundant number, since it is smaller than the sum of its proper divisors (324410276).

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

212341212 is a wasteful number, since it uses less digits than its factorization.

212341212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5898377 (or 5898372 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 212341212 is about 14571.9323358297. The cubic root of 212341212 is about 596.5929229975.

Adding to 212341212 its reverse (212143212), we get a palindrome (424484424).

The spelling of 212341212 in words is "two hundred twelve million, three hundred forty-one thousand, two hundred twelve".