212130043543 has 4 divisors (see below), whose sum is σ = 231414592968. Its totient is φ = 192845494120.

The previous prime is 212130043493. The next prime is 212130043589. The reversal of 212130043543 is 345340031212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212130043543 - 2²⁹ = 211593172631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212130046543) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9642274696 + ... + 9642274717.

It is an arithmetic number, because the mean of its divisors is an integer number (57853648242).

Almost surely, 2^212130043543 is an apocalyptic number.

212130043543 is a deficient number, since it is larger than the sum of its proper divisors (19284549425).

212130043543 is a wasteful number, since it uses less digits than its factorization.

212130043543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19284549424.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 212130043543 its reverse (345340031212), we get a palindrome (557470074755).

The spelling of 212130043543 in words is "two hundred twelve billion, one hundred thirty million, forty-three thousand, five hundred forty-three".