12320111 has 8 divisors (see below), whose sum is σ = 12895200. Its totient is φ = 11748352.

The previous prime is 12320093. The next prime is 12320117. The reversal of 12320111 is 11102321.

12320111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12320111 - 2⁶ = 12320047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12320092 and 12320101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320117) 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 7 ways as a sum of consecutive naturals, for example, 9731 + ... + 10923.

It is an arithmetic number, because the mean of its divisors is an integer number (1611900).

Almost surely, 2^12320111 is an apocalyptic number.

12320111 is a deficient number, since it is larger than the sum of its proper divisors (575089).

12320111 is a wasteful number, since it uses less digits than its factorization.

12320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 12320111 is about 3510.0015669512. The cubic root of 12320111 is about 230.9607636863.

Subtracting from 12320111 its sum of digits (11), we obtain a square (12320100 = 3510²).

Adding to 12320111 its reverse (11102321), we get a palindrome (23422432).

The spelling of 12320111 in words is "twelve million, three hundred twenty thousand, one hundred eleven".