12321111001 has 8 divisors (see below), whose sum is σ = 12402252704. Its totient is φ = 12240184320.

The previous prime is 12321110999. The next prime is 12321111059. The reversal of 12321111001 is 10011112321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12321111001 - 2¹ = 12321110999 is a prime.

It is the 111001-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12321111091) by changing a digit.

It is a nontrivial repunit in base 111000.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62041 + ... + 168793.

It is an arithmetic number, because the mean of its divisors is an integer number (1550281588).

Almost surely, 2^12321111001 is an apocalyptic number.

It is an amenable number.

12321111001 is a deficient number, since it is larger than the sum of its proper divisors (81141703).

12321111001 is a wasteful number, since it uses less digits than its factorization.

12321111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107511.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12321111001 its reverse (10011112321), we get a palindrome (22332223322).

The spelling of 12321111001 in words is "twelve billion, three hundred twenty-one million, one hundred eleven thousand, one".