212405214 has 32 divisors (see below), whose sum is σ = 489332736. Its totient is φ = 60207840.

The previous prime is 212405213. The next prime is 212405231. The reversal of 212405214 is 412504212.

212405214 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 (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212405213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14577 + ... + 25244.

It is an arithmetic number, because the mean of its divisors is an integer number (15291648).

Almost surely, 2^212405214 is an apocalyptic number.

212405214 is an abundant number, since it is smaller than the sum of its proper divisors (276927522).

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

212405214 is a wasteful number, since it uses less digits than its factorization.

212405214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39960.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 212405214 is about 14574.1282415107. The cubic root of 212405214 is about 596.6528568876.

Adding to 212405214 its reverse (412504212), we get a palindrome (624909426).

The spelling of 212405214 in words is "two hundred twelve million, four hundred five thousand, two hundred fourteen".