220020200221 has 2 divisors, whose sum is σ = 220020200222. Its totient is φ = 220020200220.

The previous prime is 220020200219. The next prime is 220020200233. The reversal of 220020200221 is 122002020022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200579475321 + 19440724900 = 447861^2 + 139430^2 .

It is a cyclic number.

It is not a de Polignac number, because 220020200221 - 2¹ = 220020200219 is a prime.

Together with 220020200219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220020200251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010100110 + 110010100111.

It is an arithmetic number, because the mean of its divisors is an integer number (110010100111).

Almost surely, 2^220020200221 is an apocalyptic number.

It is an amenable number.

220020200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220020200221 is an equidigital number, since it uses as much as digits as its factorization.

220020200221 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 220020200221 its reverse (122002020022), we get a palindrome (342022220243).

The spelling of 220020200221 in words is "two hundred twenty billion, twenty million, two hundred thousand, two hundred twenty-one".