12440442111 has 8 divisors (see below), whose sum is σ = 16591155120. Its totient is φ = 8291678592.

The previous prime is 12440442061. The next prime is 12440442211. The reversal of 12440442111 is 11124404421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12440442111 - 2⁹ = 12440441599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440442211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472416 + ... + 498053.

It is an arithmetic number, because the mean of its divisors is an integer number (2073894390).

Almost surely, 2^12440442111 is an apocalyptic number.

12440442111 is a deficient number, since it is larger than the sum of its proper divisors (4150713009).

12440442111 is an equidigital number, since it uses as much as digits as its factorization.

12440442111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974745.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 12440442111 its reverse (11124404421), we get a palindrome (23564846532).

It can be divided in two parts, 124404421 and 11, that multiplied together give a palindrome (1368448631).

The spelling of 12440442111 in words is "twelve billion, four hundred forty million, four hundred forty-two thousand, one hundred eleven".