212223233443 has 4 divisors (see below), whose sum is σ = 228548097568. Its totient is φ = 195898369320.

The previous prime is 212223233437. The next prime is 212223233459. The reversal of 212223233443 is 344332322212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212223233443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212223233423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8162432043 + ... + 8162432068.

It is an arithmetic number, because the mean of its divisors is an integer number (57137024392).

Almost surely, 2^212223233443 is an apocalyptic number.

212223233443 is a deficient number, since it is larger than the sum of its proper divisors (16324864125).

212223233443 is a wasteful number, since it uses less digits than its factorization.

212223233443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16324864124.

The product of its digits is 41472, while the sum is 31.

Adding to 212223233443 its reverse (344332322212), we get a palindrome (556555555655).

The spelling of 212223233443 in words is "two hundred twelve billion, two hundred twenty-three million, two hundred thirty-three thousand, four hundred forty-three".