12443400211 has 4 divisors (see below), whose sum is σ = 13574618424. Its totient is φ = 11312182000.

The previous prime is 12443400199. The next prime is 12443400241. The reversal of 12443400211 is 11200434421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12443400211 - 2²⁵ = 12409845779 is a prime.

It is a super-2 number, since 2×12443400211² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12443400241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565609090 + ... + 565609111.

It is an arithmetic number, because the mean of its divisors is an integer number (3393654606).

Almost surely, 2^12443400211 is an apocalyptic number.

12443400211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12443400211 is a deficient number, since it is larger than the sum of its proper divisors (1131218213).

12443400211 is a wasteful number, since it uses less digits than its factorization.

12443400211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131218212.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12443400211 its reverse (11200434421), we get a palindrome (23643834632).

The spelling of 12443400211 in words is "twelve billion, four hundred forty-three million, four hundred thousand, two hundred eleven".