12421022342441 has 4 divisors (see below), whose sum is σ = 12425495165652. Its totient is φ = 12416549519232.

The previous prime is 12421022342389. The next prime is 12421022342447. The reversal of 12421022342441 is 14424322012421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4131344870041 + 8289677472400 = 2032571^2 + 2879180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12421022342441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12421022342398 and 12421022342407.

It is not an unprimeable number, because it can be changed into a prime (12421022342447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2236407440 + ... + 2236412993.

It is an arithmetic number, because the mean of its divisors is an integer number (3106373791413).

Almost surely, 2^{12421022342441} is an apocalyptic number.

It is an amenable number.

12421022342441 is a deficient number, since it is larger than the sum of its proper divisors (4472823211).

12421022342441 is an equidigital number, since it uses as much as digits as its factorization.

12421022342441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472823210.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 12421022342441 its reverse (14424322012421), we get a palindrome (26845344354862).

The spelling of 12421022342441 in words is "twelve trillion, four hundred twenty-one billion, twenty-two million, three hundred forty-two thousand, four hundred forty-one".