12231021111 has 8 divisors (see below), whose sum is σ = 16352465664. Its totient is φ = 8131795320.

The previous prime is 12231021109. The next prime is 12231021151. The reversal of 12231021111 is 11112013221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12231021111 - 2¹ = 12231021109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231021151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5553405 + ... + 5555606.

It is an arithmetic number, because the mean of its divisors is an integer number (2044058208).

Almost surely, 2^12231021111 is an apocalyptic number.

12231021111 is a deficient number, since it is larger than the sum of its proper divisors (4121444553).

12231021111 is a wasteful number, since it uses less digits than its factorization.

12231021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109381.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12231021111 its reverse (11112013221), we get a palindrome (23343034332).

The spelling of 12231021111 in words is "twelve billion, two hundred thirty-one million, twenty-one thousand, one hundred eleven".