212211223443 has 12 divisors (see below), whose sum is σ = 306531900688. Its totient is φ = 141472036080.

The previous prime is 212211223417. The next prime is 212211223489. The reversal of 212211223443 is 344322112212.

212211223443 is a `hidden beast` number, since 2 + 1 + 2 + 211 + 2 + 2 + 3 + 443 = 666.

It is not a de Polignac number, because 212211223443 - 2⁹ = 212211222931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212211223243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 678138 + ... + 940368.

Almost surely, 2^212211223443 is an apocalyptic number.

212211223443 is a deficient number, since it is larger than the sum of its proper divisors (94320677245).

212211223443 is a wasteful number, since it uses less digits than its factorization.

212211223443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352154 (or 352151 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 212211223443 its reverse (344322112212), we get a palindrome (556533335655).

The spelling of 212211223443 in words is "two hundred twelve billion, two hundred eleven million, two hundred twenty-three thousand, four hundred forty-three".