211242314345 has 4 divisors (see below), whose sum is σ = 253490777220. Its totient is φ = 168993851472.

The previous prime is 211242314333. The next prime is 211242314399. The reversal of 211242314345 is 543413242112.

211242314345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46250373481 + 164991940864 = 215059^2 + 406192^2 .

It is a cyclic number.

It is not a de Polignac number, because 211242314345 - 2¹² = 211242310249 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21124231430 + ... + 21124231439.

It is an arithmetic number, because the mean of its divisors is an integer number (63372694305).

Almost surely, 2^211242314345 is an apocalyptic number.

It is an amenable number.

211242314345 is a deficient number, since it is larger than the sum of its proper divisors (42248462875).

211242314345 is an equidigital number, since it uses as much as digits as its factorization.

211242314345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42248462874.

The product of its digits is 23040, while the sum is 32.

Adding to 211242314345 its reverse (543413242112), we get a palindrome (754655556457).

The spelling of 211242314345 in words is "two hundred eleven billion, two hundred forty-two million, three hundred fourteen thousand, three hundred forty-five".