212133423430 has 8 divisors (see below), whose sum is σ = 381840162192. Its totient is φ = 84853369368.

The previous prime is 212133423391. The next prime is 212133423479. The reversal of 212133423430 is 34324331212.

It is a happy number.

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

It is a super-2 number, since 2×212133423430² (a number of 23 digits) contains 22 as substring.

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, 10606671162 + ... + 10606671181.

It is an arithmetic number, because the mean of its divisors is an integer number (47730020274).

Almost surely, 2^212133423430 is an apocalyptic number.

212133423430 is a deficient number, since it is larger than the sum of its proper divisors (169706738762).

212133423430 is a wasteful number, since it uses less digits than its factorization.

212133423430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21213342350.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 212133423430 its reverse (34324331212), we get a palindrome (246457754642).

The spelling of 212133423430 in words is "two hundred twelve billion, one hundred thirty-three million, four hundred twenty-three thousand, four hundred thirty".