211443443242 has 8 divisors (see below), whose sum is σ = 317536990596. Its totient is φ = 105597779712.

The previous prime is 211443443231. The next prime is 211443443243. The reversal of 211443443242 is 242344344112.

It can be written as a sum of positive squares in 2 ways, for example, as 183337256041 + 28106187201 = 428179^2 + 167649^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 211443443198 and 211443443207.

It is not an unprimeable number, because it can be changed into a prime (211443443243) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 61968823 + ... + 61972234.

Almost surely, 2^211443443242 is an apocalyptic number.

211443443242 is a deficient number, since it is larger than the sum of its proper divisors (106093547354).

211443443242 is a wasteful number, since it uses less digits than its factorization.

211443443242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123941912.

The product of its digits is 73728, while the sum is 34.

Adding to 211443443242 its reverse (242344344112), we get a palindrome (453787787354).

The spelling of 211443443242 in words is "two hundred eleven billion, four hundred forty-three million, four hundred forty-three thousand, two hundred forty-two".