21134404113441 has 32 divisors (see below), whose sum is σ = 29423047219200. Its totient is φ = 13468461646464.

The previous prime is 21134404113391. The next prime is 21134404113461. The reversal of 21134404113441 is 14431140443112.

It is a de Polignac number, because none of the positive numbers 2^k-21134404113441 is a prime.

It is a super-2 number, since 2×21134404113441² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21134404113461) 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, 1500270100 + ... + 1500284186.

It is an arithmetic number, because the mean of its divisors is an integer number (919470225600).

Almost surely, 2^{21134404113441} is an apocalyptic number.

It is an amenable number.

21134404113441 is a deficient number, since it is larger than the sum of its proper divisors (8288643105759).

21134404113441 is a wasteful number, since it uses less digits than its factorization.

21134404113441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26365.

The product of its (nonzero) digits is 18432, while the sum is 33.

Adding to 21134404113441 its reverse (14431140443112), we get a palindrome (35565544556553).

The spelling of 21134404113441 in words is "twenty-one trillion, one hundred thirty-four billion, four hundred four million, one hundred thirteen thousand, four hundred forty-one".