21013022321201 has 4 divisors (see below), whose sum is σ = 21279009945600. Its totient is φ = 20747034696804.

The previous prime is 21013022321191. The next prime is 21013022321219. The reversal of 21013022321201 is 10212322031012.

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 a de Polignac number, because none of the positive numbers 2^k-21013022321201 is a prime.

It is a super-3 number, since 3×21013022321201³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21013022321251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132993812081 + ... + 132993812238.

It is an arithmetic number, because the mean of its divisors is an integer number (5319752486400).

Almost surely, 2^{21013022321201} is an apocalyptic number.

It is an amenable number.

21013022321201 is a deficient number, since it is larger than the sum of its proper divisors (265987624399).

21013022321201 is an equidigital number, since it uses as much as digits as its factorization.

21013022321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265987624398.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21013022321201 its reverse (10212322031012), we get a palindrome (31225344352213).

The spelling of 21013022321201 in words is "twenty-one trillion, thirteen billion, twenty-two million, three hundred twenty-one thousand, two hundred one".