212430212340 has 96 divisors (see below), whose sum is σ = 596204340480. Its totient is φ = 56514932736.

The previous prime is 212430212321. The next prime is 212430212369. The reversal of 212430212340 is 43212034212.

It is a happy number.

It is a super-2 number, since 2×212430212340² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212430212340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54790482 + ... + 54794358.

It is an arithmetic number, because the mean of its divisors is an integer number (6210461880).

Almost surely, 2^212430212340 is an apocalyptic number.

212430212340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212430212340 is an abundant number, since it is smaller than the sum of its proper divisors (383774128140).

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

212430212340 is a wasteful number, since it uses less digits than its factorization.

212430212340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801 (or 5799 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 212430212340 its reverse (43212034212), we get a palindrome (255642246552).

The spelling of 212430212340 in words is "two hundred twelve billion, four hundred thirty million, two hundred twelve thousand, three hundred forty".