212420334 has 32 divisors (see below), whose sum is σ = 486890496. Its totient is φ = 60521760.

The previous prime is 212420311. The next prime is 212420347. The reversal of 212420334 is 433024212.

212420334 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 self number, because there is not a number n which added to its sum of digits gives 212420334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8524 + ... + 22304.

It is an arithmetic number, because the mean of its divisors is an integer number (15215328).

Almost surely, 2^212420334 is an apocalyptic number.

212420334 is an abundant number, since it is smaller than the sum of its proper divisors (274470162).

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

212420334 is a wasteful number, since it uses less digits than its factorization.

212420334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14160.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 212420334 is about 14574.6469597037. The cubic root of 212420334 is about 596.6670140686.

Adding to 212420334 its reverse (433024212), we get a palindrome (645444546).

The spelling of 212420334 in words is "two hundred twelve million, four hundred twenty thousand, three hundred thirty-four".