211232231123 has 4 divisors (see below), whose sum is σ = 211233279960. Its totient is φ = 211231182288.

The previous prime is 211232231071. The next prime is 211232231149. The reversal of 211232231123 is 321132232112.

211232231123 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211232231123 - 2¹⁸ = 211231968979 is a prime.

It is a super-2 number, since 2×211232231123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211232231153) by changing a digit.

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, 116618 + ... + 660351.

It is an arithmetic number, because the mean of its divisors is an integer number (52808319990).

Almost surely, 2^211232231123 is an apocalyptic number.

211232231123 is a deficient number, since it is larger than the sum of its proper divisors (1048837).

211232231123 is an equidigital number, since it uses as much as digits as its factorization.

211232231123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048836.

The product of its digits is 864, while the sum is 23.

Adding to 211232231123 its reverse (321132232112), we get a palindrome (532364463235).

The spelling of 211232231123 in words is "two hundred eleven billion, two hundred thirty-two million, two hundred thirty-one thousand, one hundred twenty-three".