212543345212 has 18 divisors (see below), whose sum is σ = 408838543064. Its totient is φ = 96610611240.

The previous prime is 212543345191. The next prime is 212543345227.

212543345212 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 219569088 + ... + 219570055.

Almost surely, 2^212543345212 is an apocalyptic number.

212543345212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212543345212 is a deficient number, since it is larger than the sum of its proper divisors (196295197852).

212543345212 is a wasteful number, since it uses less digits than its factorization.

212543345212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439139169 (or 439139156 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

It can be divided in two parts, 212543 and 345212, that added together give a palindrome (557755).

The spelling of 212543345212 in words is "two hundred twelve billion, five hundred forty-three million, three hundred forty-five thousand, two hundred twelve".