12420543032252 has 12 divisors (see below), whose sum is σ = 21735986767320. Its totient is φ = 6210261098736.

The previous prime is 12420543032101. The next prime is 12420543032281. The reversal of 12420543032252 is 25223034502421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485663 + ... + 5007689.

It is an arithmetic number, because the mean of its divisors is an integer number (1811332230610).

Almost surely, 2^{12420543032252} is an apocalyptic number.

It is an amenable number.

12420543032252 is a deficient number, since it is larger than the sum of its proper divisors (9315443735068).

12420543032252 is a wasteful number, since it uses less digits than its factorization.

12420543032252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5208700 (or 5208698 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 12420543032252 its reverse (25223034502421), we get a palindrome (37643577534673).

The spelling of 12420543032252 in words is "twelve trillion, four hundred twenty billion, five hundred forty-three million, thirty-two thousand, two hundred fifty-two".