211143344113243 has 4 divisors (see below), whose sum is σ = 211905594453280. Its totient is φ = 210381093773208.

The previous prime is 211143344113147. The next prime is 211143344113283. The reversal of 211143344113243 is 342311443341112.

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

It is a cyclic number.

It is not a de Polignac number, because 211143344113243 - 2²⁵ = 211143310558811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211143344113283) 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, 381125169603 + ... + 381125170156.

It is an arithmetic number, because the mean of its divisors is an integer number (52976398613320).

Almost surely, 2^{211143344113243} is an apocalyptic number.

211143344113243 is a deficient number, since it is larger than the sum of its proper divisors (762250340037).

211143344113243 is an equidigital number, since it uses as much as digits as its factorization.

211143344113243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762250340036.

The product of its digits is 82944, while the sum is 37.

Adding to 211143344113243 its reverse (342311443341112), we get a palindrome (553454787454355).

The spelling of 211143344113243 in words is "two hundred eleven trillion, one hundred forty-three billion, three hundred forty-four million, one hundred thirteen thousand, two hundred forty-three".