212424330 has 32 divisors (see below), whose sum is σ = 512080704. Its totient is φ = 56395136.

The previous prime is 212424319. The next prime is 212424337. The reversal of 212424330 is 33424212.

It is a junction number, because it is equal to n+sod(n) for n = 212424297 and 212424306.

It is not an unprimeable number, because it can be changed into a prime (212424337) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8787 + ... + 22406.

It is an arithmetic number, because the mean of its divisors is an integer number (16002522).

Almost surely, 2^212424330 is an apocalyptic number.

212424330 is an abundant number, since it is smaller than the sum of its proper divisors (299656374).

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

212424330 is a wasteful number, since it uses less digits than its factorization.

212424330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31430.

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

The square root of 212424330 is about 14574.7840464276. The cubic root of 212424330 is about 596.6707554970.

Adding to 212424330 its reverse (33424212), we get a palindrome (245848542).

The spelling of 212424330 in words is "two hundred twelve million, four hundred twenty-four thousand, three hundred thirty".