12421132004 has 6 divisors (see below), whose sum is σ = 21736981014. Its totient is φ = 6210566000.

The previous prime is 12421131977. The next prime is 12421132007. The reversal of 12421132004 is 40023112421.

It can be written as a sum of positive squares in only one way, i.e., 6477030400 + 5944101604 = 80480^2 + 77098^2 .

It is not an unprimeable number, because it can be changed into a prime (12421132007) 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 as a sum of consecutive naturals, namely, 1552641497 + ... + 1552641504.

It is an arithmetic number, because the mean of its divisors is an integer number (3622830169).

Almost surely, 2^12421132004 is an apocalyptic number.

It is an amenable number.

12421132004 is a deficient number, since it is larger than the sum of its proper divisors (9315849010).

12421132004 is a wasteful number, since it uses less digits than its factorization.

12421132004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105283005 (or 3105283003 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12421132004 its reverse (40023112421), we get a palindrome (52444244425).

The spelling of 12421132004 in words is "twelve billion, four hundred twenty-one million, one hundred thirty-two thousand, four".