21104304100001 has 4 divisors (see below), whose sum is σ = 21104387483904. Its totient is φ = 21104220716100.

The previous prime is 21104304099971. The next prime is 21104304100007. The reversal of 21104304100001 is 10000140340112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21104304100001 - 2³⁸ = 20829426193057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21104304100007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41311145 + ... + 41818886.

It is an arithmetic number, because the mean of its divisors is an integer number (5276096870976).

Almost surely, 2^{21104304100001} is an apocalyptic number.

It is an amenable number.

21104304100001 is a deficient number, since it is larger than the sum of its proper divisors (83383903).

21104304100001 is an equidigital number, since it uses as much as digits as its factorization.

21104304100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83383902.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21104304100001 its reverse (10000140340112), we get a palindrome (31104444440113).

The spelling of 21104304100001 in words is "twenty-one trillion, one hundred four billion, three hundred four million, one hundred thousand, one".