12421230055543 has 8 divisors (see below), whose sum is σ = 12790115323776. Its totient is φ = 12055484236800.

The previous prime is 12421230055537. The next prime is 12421230055547. The reversal of 12421230055543 is 34555003212421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12421230055543 - 2⁵ = 12421230055511 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 (12421230055547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784854343 + ... + 784870168.

It is an arithmetic number, because the mean of its divisors is an integer number (1598764415472).

Almost surely, 2^{12421230055543} is an apocalyptic number.

12421230055543 is a deficient number, since it is larger than the sum of its proper divisors (368885268233).

12421230055543 is a wasteful number, since it uses less digits than its factorization.

12421230055543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569724745.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 12421230055543 its reverse (34555003212421), we get a palindrome (46976233267964).

The spelling of 12421230055543 in words is "twelve trillion, four hundred twenty-one billion, two hundred thirty million, fifty-five thousand, five hundred forty-three".