220220201 has 2 divisors, whose sum is σ = 220220202. Its totient is φ = 220220200.

The previous prime is 220220197. The next prime is 220220213. The reversal of 220220201 is 102022022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219750976 + 469225 = 14824^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 220220201 - 2² = 220220197 is a prime.

It is not a weakly prime, because it can be changed into another prime (220220251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110100 + 110110101.

It is an arithmetic number, because the mean of its divisors is an integer number (110110101).

Almost surely, 2^220220201 is an apocalyptic number.

It is an amenable number.

220220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220201 is an equidigital number, since it uses as much as digits as its factorization.

220220201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 220220201 is about 14839.8180918770. The cubic root of 220220201 is about 603.8824173917.

Adding to 220220201 its reverse (102022022), we get a palindrome (322242223).

The spelling of 220220201 in words is "two hundred twenty million, two hundred twenty thousand, two hundred one".