20222000221 has 2 divisors, whose sum is σ = 20222000222. Its totient is φ = 20222000220.

The previous prime is 20222000203. The next prime is 20222000243. The reversal of 20222000221 is 12200022202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14462708121 + 5759292100 = 120261^2 + 75890^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222000221 - 2⁵ = 20222000189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20222000251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111000110 + 10111000111.

It is an arithmetic number, because the mean of its divisors is an integer number (10111000111).

Almost surely, 2^20222000221 is an apocalyptic number.

It is an amenable number.

20222000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222000221 is an equidigital number, since it uses as much as digits as its factorization.

20222000221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20222000221 its reverse (12200022202), we get a palindrome (32422022423).

The spelling of 20222000221 in words is "twenty billion, two hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.