2000221100221 has 2 divisors, whose sum is σ = 2000221100222. Its totient is φ = 2000221100220.

The previous prime is 2000221100183. The next prime is 2000221100243. The reversal of 2000221100221 is 1220011220002.

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., 1651661928900 + 348559171321 = 1285170^2 + 590389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000221100221 - 2¹¹ = 2000221098173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000221100821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000110550110 + 1000110550111.

It is an arithmetic number, because the mean of its divisors is an integer number (1000110550111).

Almost surely, 2^{2000221100221} is an apocalyptic number.

It is an amenable number.

2000221100221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000221100221 is an equidigital number, since it uses as much as digits as its factorization.

2000221100221 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 2000221100221 its reverse (1220011220002), we get a palindrome (3220232320223).

The spelling of 2000221100221 in words is "two trillion, two hundred twenty-one million, one hundred thousand, two hundred twenty-one".