21041310441 has 16 divisors (see below), whose sum is σ = 29026863360. Its totient is φ = 13541794560.

The previous prime is 21041310377. The next prime is 21041310449. The reversal of 21041310441 is 14401314012.

It is not a de Polignac number, because 21041310441 - 2⁶ = 21041310377 is a prime.

It is a super-2 number, since 2×21041310441² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21041310449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747696 + ... + 775326.

It is an arithmetic number, because the mean of its divisors is an integer number (1814178960).

Almost surely, 2^21041310441 is an apocalyptic number.

It is an amenable number.

21041310441 is a deficient number, since it is larger than the sum of its proper divisors (7985552919).

21041310441 is a wasteful number, since it uses less digits than its factorization.

21041310441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36416.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21041310441 its reverse (14401314012), we get a palindrome (35442624453).

The spelling of 21041310441 in words is "twenty-one billion, forty-one million, three hundred ten thousand, four hundred forty-one".