21444330144003 has 32 divisors (see below), whose sum is σ = 30926953774080. Its totient is φ = 13138623740160.

The previous prime is 21444330143981. The next prime is 21444330144113. The reversal of 21444330144003 is 30044103344412.

It is not a de Polignac number, because 21444330144003 - 2⁶ = 21444330143939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21444330144203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100386438 + ... + 100599828.

It is an arithmetic number, because the mean of its divisors is an integer number (966467305440).

Almost surely, 2^{21444330144003} is an apocalyptic number.

21444330144003 is a deficient number, since it is larger than the sum of its proper divisors (9482623630077).

21444330144003 is a wasteful number, since it uses less digits than its factorization.

21444330144003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224699.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 21444330144003 its reverse (30044103344412), we get a palindrome (51488433488415).

The spelling of 21444330144003 in words is "twenty-one trillion, four hundred forty-four billion, three hundred thirty million, one hundred forty-four thousand, three".