21104102301221 has 8 divisors (see below), whose sum is σ = 21507375222144. Its totient is φ = 20701017614160.

The previous prime is 21104102301193. The next prime is 21104102301241. The reversal of 21104102301221 is 12210320140112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21104102301221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21104102301193 and 21104102301202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21104102301241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46832081 + ... + 47280566.

It is an arithmetic number, because the mean of its divisors is an integer number (2688421902768).

Almost surely, 2^{21104102301221} is an apocalyptic number.

It is an amenable number.

21104102301221 is a deficient number, since it is larger than the sum of its proper divisors (403272920923).

21104102301221 is an equidigital number, since it uses as much as digits as its factorization.

21104102301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94116931.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21104102301221 its reverse (12210320140112), we get a palindrome (33314422441333).

The spelling of 21104102301221 in words is "twenty-one trillion, one hundred four billion, one hundred two million, three hundred one thousand, two hundred twenty-one".