21021300320201 has 12 divisors (see below), whose sum is σ = 22654249279920. Its totient is φ = 19451778476760.

The previous prime is 21021300320183. The next prime is 21021300320219. The reversal of 21021300320201 is 10202300312012.

It is an interprime number because it is at equal distance from previous prime (21021300320183) and next prime (21021300320219).

It is not a de Polignac number, because 21021300320201 - 2²² = 21021296125897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21021300320201.

It is not an unprimeable number, because it can be changed into a prime (21021300320221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299149355 + ... + 299219616.

It is an arithmetic number, because the mean of its divisors is an integer number (1887854106660).

Almost surely, 2^{21021300320201} is an apocalyptic number.

It is an amenable number.

21021300320201 is a deficient number, since it is larger than the sum of its proper divisors (1632948959719).

21021300320201 is an equidigital number, since it uses as much as digits as its factorization.

21021300320201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598369076 (or 598369033 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21021300320201 its reverse (10202300312012), we get a palindrome (31223600632213).

The spelling of 21021300320201 in words is "twenty-one trillion, twenty-one billion, three hundred million, three hundred twenty thousand, two hundred one".