11144444421 has 32 divisors (see below), whose sum is σ = 16346304000. Its totient is φ = 6697615680.

The previous prime is 11144444393. The next prime is 11144444447. The reversal of 11144444421 is 12444444111.

It is not a de Polignac number, because 11144444421 - 2¹⁴ = 11144428037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11144444021) 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, 3632130 + ... + 3635196.

It is an arithmetic number, because the mean of its divisors is an integer number (510822000).

Almost surely, 2^11144444421 is an apocalyptic number.

11144444421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11144444421 is a deficient number, since it is larger than the sum of its proper divisors (5201859579).

11144444421 is a wasteful number, since it uses less digits than its factorization.

11144444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969.

The product of its digits is 8192, while the sum is 30.

Adding to 11144444421 its reverse (12444444111), we get a palindrome (23588888532).

The spelling of 11144444421 in words is "eleven billion, one hundred forty-four million, four hundred forty-four thousand, four hundred twenty-one".