212243232443 has 16 divisors (see below), whose sum is σ = 233866522080. Its totient is φ = 191008608000.

The previous prime is 212243232419. The next prime is 212243232449. The reversal of 212243232443 is 344232342212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212243232443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212243232449) 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 15 ways as a sum of consecutive naturals, for example, 10754621 + ... + 10774337.

It is an arithmetic number, because the mean of its divisors is an integer number (14616657630).

Almost surely, 2^212243232443 is an apocalyptic number.

212243232443 is a deficient number, since it is larger than the sum of its proper divisors (21623289637).

212243232443 is a wasteful number, since it uses less digits than its factorization.

212243232443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29518.

The product of its digits is 55296, while the sum is 32.

Adding to 212243232443 its reverse (344232342212), we get a palindrome (556475574655).

The spelling of 212243232443 in words is "two hundred twelve billion, two hundred forty-three million, two hundred thirty-two thousand, four hundred forty-three".