12421352343 has 8 divisors (see below), whose sum is σ = 16563833856. Its totient is φ = 8279886200.

The previous prime is 12421352329. The next prime is 12421352357. The reversal of 12421352343 is 34325312421.

It is an interprime number because it is at equal distance from previous prime (12421352329) and next prime (12421352357).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12421352343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12421352343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421352393) 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, 224823 + ... + 274568.

It is an arithmetic number, because the mean of its divisors is an integer number (2070479232).

Almost surely, 2^12421352343 is an apocalyptic number.

12421352343 is a deficient number, since it is larger than the sum of its proper divisors (4142481513).

12421352343 is an equidigital number, since it uses as much as digits as its factorization.

12421352343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507685.

The product of its digits is 17280, while the sum is 30.

Adding to 12421352343 its reverse (34325312421), we get a palindrome (46746664764).

The spelling of 12421352343 in words is "twelve billion, four hundred twenty-one million, three hundred fifty-two thousand, three hundred forty-three".