12245127443 has 4 divisors (see below), whose sum is σ = 12263709480. Its totient is φ = 12226545408.

The previous prime is 12245127439. The next prime is 12245127449. The reversal of 12245127443 is 34472154221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34472154221 = 138283 ⋅249287.

It is a cyclic number.

It is not a de Polignac number, because 12245127443 - 2² = 12245127439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12245127449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9290030 + ... + 9291347.

It is an arithmetic number, because the mean of its divisors is an integer number (3065927370).

Almost surely, 2^12245127443 is an apocalyptic number.

12245127443 is a deficient number, since it is larger than the sum of its proper divisors (18582037).

12245127443 is an equidigital number, since it uses as much as digits as its factorization.

12245127443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18582036.

The product of its digits is 53760, while the sum is 35.

The spelling of 12245127443 in words is "twelve billion, two hundred forty-five million, one hundred twenty-seven thousand, four hundred forty-three".