12440143111 has 8 divisors (see below), whose sum is σ = 13572270864. Its totient is φ = 11308216320.

The previous prime is 12440143103. The next prime is 12440143127. The reversal of 12440143111 is 11134104421.

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 12440143111 - 2³ = 12440143103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440143151) 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, 98311 + ... + 185863.

It is an arithmetic number, because the mean of its divisors is an integer number (1696533858).

Almost surely, 2^12440143111 is an apocalyptic number.

12440143111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12440143111 is a deficient number, since it is larger than the sum of its proper divisors (1132127753).

12440143111 is a wasteful number, since it uses less digits than its factorization.

12440143111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100481.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12440143111 its reverse (11134104421), we get a palindrome (23574247532).

It can be divided in two parts, 12440 and 143111, that added together give a palindrome (155551).

The spelling of 12440143111 in words is "twelve billion, four hundred forty million, one hundred forty-three thousand, one hundred eleven".