212304242412 has 72 divisors (see below), whose sum is σ = 544808549376. Its totient is φ = 69693823584.

The previous prime is 212304242407. The next prime is 212304242417. The reversal of 212304242412 is 214242403212.

It is a happy number.

212304242412 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 0 + 4 + 242 + 412 = 666.

It is an interprime number because it is at equal distance from previous prime (212304242407) and next prime (212304242417).

It is a super-2 number, since 2×212304242412² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212304242417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11913613 + ... + 11931419.

It is an arithmetic number, because the mean of its divisors is an integer number (7566785408).

Almost surely, 2^212304242412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212304242412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272404274688).

212304242412 is an abundant number, since it is smaller than the sum of its proper divisors (332504306964).

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

212304242412 is a wasteful number, since it uses less digits than its factorization.

212304242412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22827 (or 22822 counting only the distinct ones).

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

Adding to 212304242412 its reverse (214242403212), we get a palindrome (426546645624).

The spelling of 212304242412 in words is "two hundred twelve billion, three hundred four million, two hundred forty-two thousand, four hundred twelve".