12144123211 has 16 divisors (see below), whose sum is σ = 13879289088. Its totient is φ = 10517980000.

The previous prime is 12144123151. The next prime is 12144123263. The reversal of 12144123211 is 11232144121.

It is not a de Polignac number, because 12144123211 - 2²⁷ = 12009905483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12144123611) 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 15 ways as a sum of consecutive naturals, for example, 32116 + ... + 159121.

It is an arithmetic number, because the mean of its divisors is an integer number (867455568).

Almost surely, 2^12144123211 is an apocalyptic number.

12144123211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12144123211 is a deficient number, since it is larger than the sum of its proper divisors (1735165877).

12144123211 is a wasteful number, since it uses less digits than its factorization.

12144123211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191522.

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

Adding to 12144123211 its reverse (11232144121), we get a palindrome (23376267332).

The spelling of 12144123211 in words is "twelve billion, one hundred forty-four million, one hundred twenty-three thousand, two hundred eleven".