12320111001 has 32 divisors (see below), whose sum is σ = 18463863168. Its totient is φ = 7241495040.

The previous prime is 12320110991. The next prime is 12320111051. The reversal of 12320111001 is 10011102321.

It is not a de Polignac number, because 12320111001 - 2⁶ = 12320110937 is a prime.

It is a super-2 number, since 2×12320111001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12320111051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366055 + ... + 398291.

It is an arithmetic number, because the mean of its divisors is an integer number (576995724).

Almost surely, 2^12320111001 is an apocalyptic number.

12320111001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12320111001 is a deficient number, since it is larger than the sum of its proper divisors (6143752167).

12320111001 is a wasteful number, since it uses less digits than its factorization.

12320111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32601.

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

Adding to 12320111001 its reverse (10011102321), we get a palindrome (22331213322).

It can be divided in two parts, 12320 and 111001, that added together give a palindrome (123321).

The spelling of 12320111001 in words is "twelve billion, three hundred twenty million, one hundred eleven thousand, one".