221021000200201 has 2 divisors, whose sum is σ = 221021000200202. Its totient is φ = 221021000200200.

The previous prime is 221021000200193. The next prime is 221021000200229. The reversal of 221021000200201 is 102002000120122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220575250354176 + 445749846025 = 14851776^2 + 667645^2 .

It is a cyclic number.

It is not a de Polignac number, because 221021000200201 - 2³ = 221021000200193 is a prime.

It is not a weakly prime, because it can be changed into another prime (221021000200241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510500100100 + 110510500100101.

It is an arithmetic number, because the mean of its divisors is an integer number (110510500100101).

Almost surely, 2^{221021000200201} is an apocalyptic number.

It is an amenable number.

221021000200201 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021000200201 is an equidigital number, since it uses as much as digits as its factorization.

221021000200201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221021000200201 its reverse (102002000120122), we get a palindrome (323023000320323).

The spelling of 221021000200201 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred thousand, two hundred one".