21301230001321 has 8 divisors (see below), whose sum is σ = 21408588742464. Its totient is φ = 21194070999120.

The previous prime is 21301230001307. The next prime is 21301230001327. The reversal of 21301230001321 is 12310003210312.

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

It is a cyclic number.

It is not a de Polignac number, because 21301230001321 - 2³⁷ = 21163791047849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21301230001327) 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, 49720906 + ... + 50147491.

It is an arithmetic number, because the mean of its divisors is an integer number (2676073592808).

Almost surely, 2^{21301230001321} is an apocalyptic number.

It is an amenable number.

21301230001321 is a deficient number, since it is larger than the sum of its proper divisors (107358741143).

21301230001321 is an equidigital number, since it uses as much as digits as its factorization.

21301230001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99869471.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21301230001321 its reverse (12310003210312), we get a palindrome (33611233211633).

The spelling of 21301230001321 in words is "twenty-one trillion, three hundred one billion, two hundred thirty million, one thousand, three hundred twenty-one".