12440403111 has 16 divisors (see below), whose sum is σ = 16920075744. Its totient is φ = 8127535104.

The previous prime is 12440403077. The next prime is 12440403149. The reversal of 12440403111 is 11130404421.

It is not a de Polignac number, because 12440403111 - 2¹⁵ = 12440370343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440403011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90615 + ... + 181911.

It is an arithmetic number, because the mean of its divisors is an integer number (1057504734).

Almost surely, 2^12440403111 is an apocalyptic number.

12440403111 is a deficient number, since it is larger than the sum of its proper divisors (4479672633).

12440403111 is an equidigital number, since it uses as much as digits as its factorization.

12440403111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92210.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12440403111 its reverse (11130404421), we get a palindrome (23570807532).

The spelling of 12440403111 in words is "twelve billion, four hundred forty million, four hundred three thousand, one hundred eleven".