12144034421 has 2 divisors, whose sum is σ = 12144034422. Its totient is φ = 12144034420.

The previous prime is 12144034411. The next prime is 12144034447. The reversal of 12144034421 is 12443044121.

It is an a-pointer prime, because the next prime (12144034447) can be obtained adding 12144034421 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11425258321 + 718776100 = 106889^2 + 26810^2 .

It is a cyclic number.

It is not a de Polignac number, because 12144034421 - 2²⁶ = 12076925557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12144034411) 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 as a sum of consecutive naturals, namely, 6072017210 + 6072017211.

It is an arithmetic number, because the mean of its divisors is an integer number (6072017211).

Almost surely, 2^12144034421 is an apocalyptic number.

It is an amenable number.

12144034421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12144034421 is an equidigital number, since it uses as much as digits as its factorization.

12144034421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 12144034421 its reverse (12443044121), we get a palindrome (24587078542).

The spelling of 12144034421 in words is "twelve billion, one hundred forty-four million, thirty-four thousand, four hundred twenty-one".