12231122311 has 4 divisors (see below), whose sum is σ = 12950600112. Its totient is φ = 11511644512.

The previous prime is 12231122291. The next prime is 12231122327. The reversal of 12231122311 is 11322113221.

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 12231122311 - 2¹¹ = 12231120263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231122341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359738875 + ... + 359738908.

It is an arithmetic number, because the mean of its divisors is an integer number (3237650028).

Almost surely, 2^12231122311 is an apocalyptic number.

12231122311 is a deficient number, since it is larger than the sum of its proper divisors (719477801).

12231122311 is an equidigital number, since it uses as much as digits as its factorization.

12231122311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719477800.

The product of its digits is 144, while the sum is 19.

Adding to 12231122311 its reverse (11322113221), we get a palindrome (23553235532).

The spelling of 12231122311 in words is "twelve billion, two hundred thirty-one million, one hundred twenty-two thousand, three hundred eleven".