11144442535421 has 32 divisors (see below), whose sum is σ = 12086631083520. Its totient is φ = 10214704641024.

The previous prime is 11144442535349. The next prime is 11144442535433. The reversal of 11144442535421 is 12453524444111.

It is not a de Polignac number, because 11144442535421 - 2²² = 11144438341117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11144442535441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1552795985 + ... + 1552803161.

It is an arithmetic number, because the mean of its divisors is an integer number (377707221360).

Almost surely, 2^{11144442535421} is an apocalyptic number.

It is an amenable number.

11144442535421 is a deficient number, since it is larger than the sum of its proper divisors (942188548099).

11144442535421 is a wasteful number, since it uses less digits than its factorization.

11144442535421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8925.

The product of its digits is 307200, while the sum is 41.

Adding to 11144442535421 its reverse (12453524444111), we get a palindrome (23597966979532).

The spelling of 11144442535421 in words is "eleven trillion, one hundred forty-four billion, four hundred forty-two million, five hundred thirty-five thousand, four hundred twenty-one".