21130104441 has 12 divisors (see below), whose sum is σ = 28877397296. Its totient is φ = 13743154080.

The previous prime is 21130104409. The next prime is 21130104449. The reversal of 21130104441 is 14440103112.

It is not a de Polignac number, because 21130104441 - 2⁵ = 21130104409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21130104449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2089951 + ... + 2100036.

Almost surely, 2^21130104441 is an apocalyptic number.

It is an amenable number.

21130104441 is a deficient number, since it is larger than the sum of its proper divisors (7747292855).

21130104441 is an equidigital number, since it uses as much as digits as its factorization.

21130104441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190072 (or 4190031 counting only the distinct ones).

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

Adding to 21130104441 its reverse (14440103112), we get a palindrome (35570207553).

The spelling of 21130104441 in words is "twenty-one billion, one hundred thirty million, one hundred four thousand, four hundred forty-one".