12345441111 has 6 divisors (see below), whose sum is σ = 17832303840. Its totient is φ = 8230294068.

The previous prime is 12345441049. The next prime is 12345441149. The reversal of 12345441111 is 11114454321.

It is a happy number.

12345441111 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 544 + 1 + 111 = 666.

It is not a de Polignac number, because 12345441111 - 2¹¹ = 12345439063 is a prime.

It is a super-3 number, since 3×12345441111³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345441151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 685857831 + ... + 685857848.

It is an arithmetic number, because the mean of its divisors is an integer number (2972050640).

Almost surely, 2^12345441111 is an apocalyptic number.

12345441111 is a deficient number, since it is larger than the sum of its proper divisors (5486862729).

12345441111 is a wasteful number, since it uses less digits than its factorization.

12345441111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371715685 (or 1371715682 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

Adding to 12345441111 its reverse (11114454321), we get a palindrome (23459895432).

The spelling of 12345441111 in words is "twelve billion, three hundred forty-five million, four hundred forty-one thousand, one hundred eleven".