211242330242 has 8 divisors (see below), whose sum is σ = 335502524556. Its totient is φ = 99408155392.

The previous prime is 211242330241. The next prime is 211242330251. The reversal of 211242330242 is 242033242112.

It can be written as a sum of positive squares in 2 ways, for example, as 191046793921 + 20195536321 = 437089^2 + 142111^2 .

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

It is not an unprimeable number, because it can be changed into a prime (211242330241) 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, 3106504823 + ... + 3106504890.

Almost surely, 2^211242330242 is an apocalyptic number.

211242330242 is a deficient number, since it is larger than the sum of its proper divisors (124260194314).

211242330242 is a wasteful number, since it uses less digits than its factorization.

211242330242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6213009732.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 211242330242 its reverse (242033242112), we get a palindrome (453275572354).

The spelling of 211242330242 in words is "two hundred eleven billion, two hundred forty-two million, three hundred thirty thousand, two hundred forty-two".