21444051512241 has 8 divisors (see below), whose sum is σ = 31768965203360. Its totient is φ = 14296034341476.

The previous prime is 21444051512237. The next prime is 21444051512287. The reversal of 21444051512241 is 14221515044412.

It is a happy number.

21444051512241 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 405 + 1 + 5 + 1 + 2 + 241 = 666.

It is not a de Polignac number, because 21444051512241 - 2² = 21444051512237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21444051512196 and 21444051512205.

It is not an unprimeable number, because it can be changed into a prime (21444051512441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397112065015 + ... + 397112065068.

It is an arithmetic number, because the mean of its divisors is an integer number (3971120650420).

Almost surely, 2^{21444051512241} is an apocalyptic number.

It is an amenable number.

21444051512241 is a deficient number, since it is larger than the sum of its proper divisors (10324913691119).

21444051512241 is an equidigital number, since it uses as much as digits as its factorization.

21444051512241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794224130092 (or 794224130086 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

Adding to 21444051512241 its reverse (14221515044412), we get a palindrome (35665566556653).

The spelling of 21444051512241 in words is "twenty-one trillion, four hundred forty-four billion, fifty-one million, five hundred twelve thousand, two hundred forty-one".