21104132241 has 16 divisors (see below), whose sum is σ = 29843625600. Its totient is φ = 13237086720.

The previous prime is 21104132221. The next prime is 21104132243. The reversal of 21104132241 is 14223140112.

It is not a de Polignac number, because 21104132241 - 2⁹ = 21104131729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21104132243) 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, 2502816 + ... + 2511233.

It is an arithmetic number, because the mean of its divisors is an integer number (1865226600).

Almost surely, 2^21104132241 is an apocalyptic number.

It is an amenable number.

21104132241 is a deficient number, since it is larger than the sum of its proper divisors (8739493359).

21104132241 is a wasteful number, since it uses less digits than its factorization.

21104132241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014136.

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

Adding to 21104132241 its reverse (14223140112), we get a palindrome (35327272353).

The spelling of 21104132241 in words is "twenty-one billion, one hundred four million, one hundred thirty-two thousand, two hundred forty-one".