12123314443 has 2 divisors, whose sum is σ = 12123314444. Its totient is φ = 12123314442.

The previous prime is 12123314419. The next prime is 12123314453. The reversal of 12123314443 is 34441332121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12123314443 is a prime.

It is not a weakly prime, because it can be changed into another prime (12123314453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061657221 + 6061657222.

It is an arithmetic number, because the mean of its divisors is an integer number (6061657222).

Almost surely, 2^12123314443 is an apocalyptic number.

12123314443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123314443 is an equidigital number, since it uses as much as digits as its factorization.

12123314443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

Adding to 12123314443 its reverse (34441332121), we get a palindrome (46564646564).

The spelling of 12123314443 in words is "twelve billion, one hundred twenty-three million, three hundred fourteen thousand, four hundred forty-three".