20022101000221 has 2 divisors, whose sum is σ = 20022101000222. Its totient is φ = 20022101000220.

The previous prime is 20022101000159. The next prime is 20022101000233. The reversal of 20022101000221 is 12200010122002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17844380996121 + 2177720004100 = 4224261^2 + 1475710^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022101000221 - 2¹¹ = 20022100998173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022101010221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011050500110 + 10011050500111.

It is an arithmetic number, because the mean of its divisors is an integer number (10011050500111).

Almost surely, 2^{20022101000221} is an apocalyptic number.

It is an amenable number.

20022101000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022101000221 is an equidigital number, since it uses as much as digits as its factorization.

20022101000221 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 20022101000221 its reverse (12200010122002), we get a palindrome (32222111122223).

The spelling of 20022101000221 in words is "twenty trillion, twenty-two billion, one hundred one million, two hundred twenty-one", and thus it is an aban number.