220210801 has 2 divisors, whose sum is σ = 220210802. Its totient is φ = 220210800.

The previous prime is 220210799. The next prime is 220210819. The reversal of 220210801 is 108012022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207792225 + 12418576 = 14415^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 220210801 - 2¹ = 220210799 is a prime.

Together with 220210799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (220210871) 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, 110105400 + 110105401.

It is an arithmetic number, because the mean of its divisors is an integer number (110105401).

Almost surely, 2^220210801 is an apocalyptic number.

It is an amenable number.

220210801 is a deficient number, since it is larger than the sum of its proper divisors (1).

220210801 is an equidigital number, since it uses as much as digits as its factorization.

220210801 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 16.

The square root of 220210801 is about 14839.5013730246. The cubic root of 220210801 is about 603.8738251199.

Adding to 220210801 its reverse (108012022), we get a palindrome (328222823).

The spelling of 220210801 in words is "two hundred twenty million, two hundred ten thousand, eight hundred one".