21200022300321 has 32 divisors (see below), whose sum is σ = 33549228501120. Its totient is φ = 13184258153472.

The previous prime is 21200022300313. The next prime is 21200022300323. The reversal of 21200022300321 is 12300322000212.

21200022300321 is a `hidden beast` number, since 2 + 1 + 20 + 0 + 0 + 22 + 300 + 321 = 666.

It is not a de Polignac number, because 21200022300321 - 2³ = 21200022300313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21200022300294 and 21200022300303.

It is not an unprimeable number, because it can be changed into a prime (21200022300323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204317215 + ... + 204420948.

It is an arithmetic number, because the mean of its divisors is an integer number (1048413390660).

Almost surely, 2^{21200022300321} is an apocalyptic number.

It is an amenable number.

21200022300321 is a deficient number, since it is larger than the sum of its proper divisors (12349206200799).

21200022300321 is a wasteful number, since it uses less digits than its factorization.

21200022300321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408738302 (or 408738296 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21200022300321 its reverse (12300322000212), we get a palindrome (33500344300533).

The spelling of 21200022300321 in words is "twenty-one trillion, two hundred billion, twenty-two million, three hundred thousand, three hundred twenty-one".