220423201 has 2 divisors, whose sum is σ = 220423202. Its totient is φ = 220423200.

The previous prime is 220423187. The next prime is 220423211. The reversal of 220423201 is 102324022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198810000 + 21613201 = 14100^2 + 4649^2 .

It is a cyclic number.

It is not a de Polignac number, because 220423201 - 2⁹ = 220422689 is a prime.

It is not a weakly prime, because it can be changed into another prime (220423211) 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, 110211600 + 110211601.

It is an arithmetic number, because the mean of its divisors is an integer number (110211601).

Almost surely, 2^220423201 is an apocalyptic number.

It is an amenable number.

220423201 is a deficient number, since it is larger than the sum of its proper divisors (1).

220423201 is an equidigital number, since it uses as much as digits as its factorization.

220423201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 220423201 is about 14846.6562228672. The cubic root of 220423201 is about 604.0679142747.

Adding to 220423201 its reverse (102324022), we get a palindrome (322747223).

The spelling of 220423201 in words is "two hundred twenty million, four hundred twenty-three thousand, two hundred one".