212421440430 has 48 divisors (see below), whose sum is σ = 570111744384. Its totient is φ = 54818435520.

The previous prime is 212421440417. The next prime is 212421440459. The reversal of 212421440430 is 34044124212.

212421440430 is a `hidden beast` number, since 2 + 1 + 242 + 14 + 404 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 212421440394 and 212421440403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38065569 + ... + 38071148.

It is an arithmetic number, because the mean of its divisors is an integer number (11877328008).

Almost surely, 2^212421440430 is an apocalyptic number.

212421440430 is an abundant number, since it is smaller than the sum of its proper divisors (357690303954).

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

212421440430 is a wasteful number, since it uses less digits than its factorization.

212421440430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76136761 (or 76136758 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 212421440430 its reverse (34044124212), we get a palindrome (246465564642).

The spelling of 212421440430 in words is "two hundred twelve billion, four hundred twenty-one million, four hundred forty thousand, four hundred thirty".