21330312010201 has 4 divisors (see below), whose sum is σ = 21367799378100. Its totient is φ = 21292824642304.

The previous prime is 21330312010177. The next prime is 21330312010307. The reversal of 21330312010201 is 10201021303312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2232188390601 + 19098123619600 = 1494051^2 + 4370140^2 .

It is a cyclic number.

It is not a de Polignac number, because 21330312010201 - 2⁹ = 21330312009689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330312010001) 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, 18743683096 + ... + 18743684233.

It is an arithmetic number, because the mean of its divisors is an integer number (5341949844525).

Almost surely, 2^{21330312010201} is an apocalyptic number.

It is an amenable number.

21330312010201 is a deficient number, since it is larger than the sum of its proper divisors (37487367899).

21330312010201 is an equidigital number, since it uses as much as digits as its factorization.

21330312010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37487367898.

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

Adding to 21330312010201 its reverse (10201021303312), we get a palindrome (31531333313513).

The spelling of 21330312010201 in words is "twenty-one trillion, three hundred thirty billion, three hundred twelve million, ten thousand, two hundred one".