212012561543 has 8 divisors (see below), whose sum is σ = 215534288256. Its totient is φ = 208492322400.

The previous prime is 212012561521. The next prime is 212012561561. The reversal of 212012561543 is 345165210212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212012561543 - 2⁶ = 212012561479 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 (212012561503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82628 + ... + 656393.

It is an arithmetic number, because the mean of its divisors is an integer number (26941786032).

Almost surely, 2^212012561543 is an apocalyptic number.

212012561543 is a deficient number, since it is larger than the sum of its proper divisors (3521726713).

212012561543 is an equidigital number, since it uses as much as digits as its factorization.

212012561543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743785.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 212012561543 its reverse (345165210212), we get a palindrome (557177771755).

The spelling of 212012561543 in words is "two hundred twelve billion, twelve million, five hundred sixty-one thousand, five hundred forty-three".