220210961 has 2 divisors, whose sum is σ = 220210962. Its totient is φ = 220210960.

The previous prime is 220210943. The next prime is 220210981. The reversal of 220210961 is 169012022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219780625 + 430336 = 14825^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 220210961 - 2¹⁰ = 220209937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220210981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110105480 + 110105481.

It is an arithmetic number, because the mean of its divisors is an integer number (110105481).

Almost surely, 2^220210961 is an apocalyptic number.

It is an amenable number.

220210961 is a deficient number, since it is larger than the sum of its proper divisors (1).

220210961 is an equidigital number, since it uses as much as digits as its factorization.

220210961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 220210961 is about 14839.5067640404. The cubic root of 220210961 is about 603.8739713733.

Adding to 220210961 its reverse (169012022), we get a palindrome (389222983).

The spelling of 220210961 in words is "two hundred twenty million, two hundred ten thousand, nine hundred sixty-one".