12440111 has 2 divisors, whose sum is σ = 12440112. Its totient is φ = 12440110.

The previous prime is 12440093. The next prime is 12440119. The reversal of 12440111 is 11104421.

It is a strong prime.

It is an emirp because it is prime and its reverse (11104421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12440111 - 2²² = 8245807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12440119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6220055 + 6220056.

It is an arithmetic number, because the mean of its divisors is an integer number (6220056).

Almost surely, 2^12440111 is an apocalyptic number.

12440111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12440111 is an equidigital number, since it uses as much as digits as its factorization.

12440111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 12440111 is about 3527.0541532559. The cubic root of 12440111 is about 231.7082080213.

Adding to 12440111 its reverse (11104421), we get a palindrome (23544532).

The spelling of 12440111 in words is "twelve million, four hundred forty thousand, one hundred eleven".