212043231312 has 40 divisors (see below), whose sum is σ = 597576380640. Its totient is φ = 64255524480.

The previous prime is 212043231293. The next prime is 212043231317. The reversal of 212043231312 is 213132340212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212043231317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200797987 + ... + 200799042.

It is an arithmetic number, because the mean of its divisors is an integer number (14939409516).

Almost surely, 2^212043231312 is an apocalyptic number.

212043231312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212043231312 is an abundant number, since it is smaller than the sum of its proper divisors (385533149328).

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

212043231312 is a wasteful number, since it uses less digits than its factorization.

212043231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401597051 (or 401597045 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 212043231312 its reverse (213132340212), we get a palindrome (425175571524).

The spelling of 212043231312 in words is "two hundred twelve billion, forty-three million, two hundred thirty-one thousand, three hundred twelve".