12144141421 has 4 divisors (see below), whose sum is σ = 12149155872. Its totient is φ = 12139126972.

The previous prime is 12144141409. The next prime is 12144141433. The reversal of 12144141421 is 12414144121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12414144121 = 503 ⋅24680207.

It is an interprime number because it is at equal distance from previous prime (12144141409) and next prime (12144141433).

It is a cyclic number.

It is not a de Polignac number, because 12144141421 - 2¹¹ = 12144139373 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 (12144141461) 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, 2503591 + ... + 2508436.

It is an arithmetic number, because the mean of its divisors is an integer number (3037288968).

Almost surely, 2^12144141421 is an apocalyptic number.

It is an amenable number.

12144141421 is a deficient number, since it is larger than the sum of its proper divisors (5014451).

12144141421 is an equidigital number, since it uses as much as digits as its factorization.

12144141421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014450.

The product of its digits is 1024, while the sum is 25.

Adding to 12144141421 its reverse (12414144121), we get a palindrome (24558285542).

The spelling of 12144141421 in words is "twelve billion, one hundred forty-four million, one hundred forty-one thousand, four hundred twenty-one".