12421201343 has 4 divisors (see below), whose sum is σ = 12421466160. Its totient is φ = 12420936528.

The previous prime is 12421201337. The next prime is 12421201349. The reversal of 12421201343 is 34310212421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34310212421 = 158993 ⋅215797.

It is an interprime number because it is at equal distance from previous prime (12421201337) and next prime (12421201349).

It is a cyclic number.

It is not a de Polignac number, because 12421201343 - 2⁴ = 12421201327 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 (12421201349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41030 + ... + 162867.

It is an arithmetic number, because the mean of its divisors is an integer number (3105366540).

Almost surely, 2^12421201343 is an apocalyptic number.

12421201343 is a deficient number, since it is larger than the sum of its proper divisors (264817).

12421201343 is an equidigital number, since it uses as much as digits as its factorization.

12421201343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264816.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12421201343 its reverse (34310212421), we get a palindrome (46731413764).

The spelling of 12421201343 in words is "twelve billion, four hundred twenty-one million, two hundred one thousand, three hundred forty-three".