11421442441 has 4 divisors (see below), whose sum is σ = 11504810772. Its totient is φ = 11338074112.

The previous prime is 11421442429. The next prime is 11421442451. The reversal of 11421442441 is 14424412411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14424412411 = 1097 ⋅13148963.

It can be written as a sum of positive squares in 2 ways, for example, as 8310145600 + 3111296841 = 91160^2 + 55779^2 .

It is a cyclic number.

It is not a de Polignac number, because 11421442441 - 2⁹ = 11421441929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11421442451) 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, 41683960 + ... + 41684233.

It is an arithmetic number, because the mean of its divisors is an integer number (2876202693).

Almost surely, 2^11421442441 is an apocalyptic number.

It is an amenable number.

11421442441 is a deficient number, since it is larger than the sum of its proper divisors (83368331).

11421442441 is an equidigital number, since it uses as much as digits as its factorization.

11421442441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83368330.

The product of its digits is 4096, while the sum is 28.

Adding to 11421442441 its reverse (14424412411), we get a palindrome (25845854852).

The spelling of 11421442441 in words is "eleven billion, four hundred twenty-one million, four hundred forty-two thousand, four hundred forty-one".