12231103211 has 4 divisors (see below), whose sum is σ = 12231752232. Its totient is φ = 12230454192.

The previous prime is 12231103201. The next prime is 12231103267. The reversal of 12231103211 is 11230113221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231103211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12231103211.

It is not an unprimeable number, because it can be changed into a prime (12231103201) 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, 295370 + ... + 334223.

It is an arithmetic number, because the mean of its divisors is an integer number (3057938058).

Almost surely, 2^12231103211 is an apocalyptic number.

12231103211 is a deficient number, since it is larger than the sum of its proper divisors (649021).

12231103211 is an equidigital number, since it uses as much as digits as its factorization.

12231103211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649020.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12231103211 its reverse (11230113221), we get a palindrome (23461216432).

The spelling of 12231103211 in words is "twelve billion, two hundred thirty-one million, one hundred three thousand, two hundred eleven".