211242330243 has 48 divisors (see below), whose sum is σ = 377356202496. Its totient is φ = 115461624960.

The previous prime is 211242330241. The next prime is 211242330251. The reversal of 211242330243 is 342033242112.

211242330243 is a `hidden beast` number, since 211 + 2 + 423 + 3 + 0 + 24 + 3 = 666.

It is not a de Polignac number, because 211242330243 - 2¹ = 211242330241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 47 ways as a sum of consecutive naturals, for example, 2660598 + ... + 2738843.

It is an arithmetic number, because the mean of its divisors is an integer number (7861587552).

Almost surely, 2^211242330243 is an apocalyptic number.

211242330243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

211242330243 is a deficient number, since it is larger than the sum of its proper divisors (166113872253).

211242330243 is an equidigital number, since it uses as much as digits as its factorization.

211242330243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399486 (or 5399474 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 211242330243 its reverse (342033242112), we get a palindrome (553275572355).

The spelling of 211242330243 in words is "two hundred eleven billion, two hundred forty-two million, three hundred thirty thousand, two hundred forty-three".