211333221734 has 12 divisors (see below), whose sum is σ = 323093821596. Its totient is φ = 103672898472.

The previous prime is 211333221733. The next prime is 211333221763. The reversal of 211333221734 is 437122333112.

It is a self number, because there is not a number n which added to its sum of digits gives 211333221734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211333221733) 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 5 ways as a sum of consecutive naturals, for example, 18802964 + ... + 18814199.

It is an arithmetic number, because the mean of its divisors is an integer number (26924485133).

Almost surely, 2^211333221734 is an apocalyptic number.

211333221734 is a deficient number, since it is larger than the sum of its proper divisors (111760599862).

211333221734 is an equidigital number, since it uses as much as digits as its factorization.

211333221734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37617271 (or 37617218 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

Adding to 211333221734 its reverse (437122333112), we get a palindrome (648455554846).

The spelling of 211333221734 in words is "two hundred eleven billion, three hundred thirty-three million, two hundred twenty-one thousand, seven hundred thirty-four".