212133430 has 8 divisors (see below), whose sum is σ = 381840192. Its totient is φ = 84853368.

The previous prime is 212133421. The next prime is 212133443. The reversal of 212133430 is 34331212.

212133430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 212133398 and 212133407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10606662 + ... + 10606681.

It is an arithmetic number, because the mean of its divisors is an integer number (47730024).

Almost surely, 2^212133430 is an apocalyptic number.

212133430 is a deficient number, since it is larger than the sum of its proper divisors (169706762).

212133430 is a wasteful number, since it uses less digits than its factorization.

212133430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21213350.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 212133430 is about 14564.8010628364. The cubic root of 212133430 is about 596.3982650304.

Adding to 212133430 its reverse (34331212), we get a palindrome (246464642).

The spelling of 212133430 in words is "two hundred twelve million, one hundred thirty-three thousand, four hundred thirty".