11421044421 has 4 divisors (see below), whose sum is σ = 15228059232. Its totient is φ = 7614029612.

The previous prime is 11421044413. The next prime is 11421044423. The reversal of 11421044421 is 12444012411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11421044421 - 2³ = 11421044413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11421044391 and 11421044400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421044423) 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 in 3 ways as a sum of consecutive naturals, for example, 1903507401 + ... + 1903507406.

It is an arithmetic number, because the mean of its divisors is an integer number (3807014808).

Almost surely, 2^11421044421 is an apocalyptic number.

It is an amenable number.

11421044421 is a deficient number, since it is larger than the sum of its proper divisors (3807014811).

11421044421 is an equidigital number, since it uses as much as digits as its factorization.

11421044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807014810.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 11421044421 its reverse (12444012411), we get a palindrome (23865056832).

The spelling of 11421044421 in words is "eleven billion, four hundred twenty-one million, forty-four thousand, four hundred twenty-one".