12242143404245 has 4 divisors (see below), whose sum is σ = 14690572085100. Its totient is φ = 9793714723392.

The previous prime is 12242143404241. The next prime is 12242143404347. The reversal of 12242143404245 is 54240434124221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8655964178404 + 3586179225841 = 2942102^2 + 1893721^2 .

It is a cyclic number.

It is not a de Polignac number, because 12242143404245 - 2² = 12242143404241 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12242143404199 and 12242143404208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12242143404241) 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, 1224214340420 + ... + 1224214340429.

It is an arithmetic number, because the mean of its divisors is an integer number (3672643021275).

Almost surely, 2^{12242143404245} is an apocalyptic number.

It is an amenable number.

12242143404245 is a deficient number, since it is larger than the sum of its proper divisors (2448428680855).

12242143404245 is an equidigital number, since it uses as much as digits as its factorization.

12242143404245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448428680854.

The product of its (nonzero) digits is 245760, while the sum is 38.

Adding to 12242143404245 its reverse (54240434124221), we get a palindrome (66482577528466).

The spelling of 12242143404245 in words is "twelve trillion, two hundred forty-two billion, one hundred forty-three million, four hundred four thousand, two hundred forty-five".