12441000421 has 4 divisors (see below), whose sum is σ = 12675736332. Its totient is φ = 12206264512.

The previous prime is 12441000349. The next prime is 12441000427. The reversal of 12441000421 is 12400014421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12400014421 = 17 ⋅729412613.

It can be written as a sum of positive squares in 2 ways, for example, as 11249784225 + 1191216196 = 106065^2 + 34514^2 .

It is a cyclic number.

It is not a de Polignac number, because 12441000421 - 2¹³ = 12440992229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12441000427) 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, 117367876 + ... + 117367981.

It is an arithmetic number, because the mean of its divisors is an integer number (3168934083).

Almost surely, 2^12441000421 is an apocalyptic number.

It is an amenable number.

12441000421 is a deficient number, since it is larger than the sum of its proper divisors (234735911).

12441000421 is an equidigital number, since it uses as much as digits as its factorization.

12441000421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234735910.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12441000421 its reverse (12400014421), we get a palindrome (24841014842).

The spelling of 12441000421 in words is "twelve billion, four hundred forty-one million, four hundred twenty-one", and thus it is an aban number.