21130041441 has 16 divisors (see below), whose sum is σ = 28655769600. Its totient is φ = 13847076048.

The previous prime is 21130041389. The next prime is 21130041467. The reversal of 21130041441 is 14414003112.

It is not a de Polignac number, because 21130041441 - 2¹¹ = 21130039393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21130041481) 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, 142581 + ... + 250178.

It is an arithmetic number, because the mean of its divisors is an integer number (1790985600).

Almost surely, 2^21130041441 is an apocalyptic number.

It is an amenable number.

21130041441 is a deficient number, since it is larger than the sum of its proper divisors (7525728159).

21130041441 is a wasteful number, since it uses less digits than its factorization.

21130041441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393068.

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

Adding to 21130041441 its reverse (14414003112), we get a palindrome (35544044553).

The spelling of 21130041441 in words is "twenty-one billion, one hundred thirty million, forty-one thousand, four hundred forty-one".