12144432211 has 4 divisors (see below), whose sum is σ = 12315480624. Its totient is φ = 11973383800.

The previous prime is 12144432199. The next prime is 12144432271. The reversal of 12144432211 is 11223444121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11223444121 = 31981 ⋅350941.

It is a cyclic number.

It is not a de Polignac number, because 12144432211 - 2²⁹ = 11607561299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12144432271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85524100 + ... + 85524241.

It is an arithmetic number, because the mean of its divisors is an integer number (3078870156).

Almost surely, 2^12144432211 is an apocalyptic number.

12144432211 is a deficient number, since it is larger than the sum of its proper divisors (171048413).

12144432211 is an equidigital number, since it uses as much as digits as its factorization.

12144432211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171048412.

The product of its digits is 1536, while the sum is 25.

Adding to 12144432211 its reverse (11223444121), we get a palindrome (23367876332).

The spelling of 12144432211 in words is "twelve billion, one hundred forty-four million, four hundred thirty-two thousand, two hundred eleven".