12442244401 has 4 divisors (see below), whose sum is σ = 12443006452. Its totient is φ = 12441482352.

The previous prime is 12442244389. The next prime is 12442244407. The reversal of 12442244401 is 10444224421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10444224421 = 41 ⋅254737181.

It can be written as a sum of positive squares in 2 ways, for example, as 3062515600 + 9379728801 = 55340^2 + 96849^2 .

It is a cyclic number.

It is not a de Polignac number, because 12442244401 - 2⁷ = 12442244273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12442244401.

It is not an unprimeable number, because it can be changed into a prime (12442244407) 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, 355986 + ... + 389371.

It is an arithmetic number, because the mean of its divisors is an integer number (3110751613).

Almost surely, 2^12442244401 is an apocalyptic number.

It is an amenable number.

12442244401 is a deficient number, since it is larger than the sum of its proper divisors (762051).

12442244401 is an equidigital number, since it uses as much as digits as its factorization.

12442244401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762050.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 12442244401 its reverse (10444224421), we get a palindrome (22886468822).

The spelling of 12442244401 in words is "twelve billion, four hundred forty-two million, two hundred forty-four thousand, four hundred one".