11444322421 has 32 divisors (see below), whose sum is σ = 14299750400. Its totient is φ = 8937656640.

The previous prime is 11444322413. The next prime is 11444322431. The reversal of 11444322421 is 12422344411.

It is a cyclic number.

It is not a de Polignac number, because 11444322421 - 2³ = 11444322413 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 11444322421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11444322401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 663535 + ... + 680563.

It is an arithmetic number, because the mean of its divisors is an integer number (446867200).

Almost surely, 2^11444322421 is an apocalyptic number.

It is an amenable number.

11444322421 is a deficient number, since it is larger than the sum of its proper divisors (2855427979).

11444322421 is a wasteful number, since it uses less digits than its factorization.

11444322421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17249.

The product of its digits is 6144, while the sum is 28.

Adding to 11444322421 its reverse (12422344411), we get a palindrome (23866666832).

The spelling of 11444322421 in words is "eleven billion, four hundred forty-four million, three hundred twenty-two thousand, four hundred twenty-one".