220205071 has 2 divisors, whose sum is σ = 220205072. Its totient is φ = 220205070.

The previous prime is 220205057. The next prime is 220205077. The reversal of 220205071 is 170502022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220205071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220205077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110102535 + 110102536.

It is an arithmetic number, because the mean of its divisors is an integer number (110102536).

Almost surely, 2^220205071 is an apocalyptic number.

220205071 is a deficient number, since it is larger than the sum of its proper divisors (1).

220205071 is an equidigital number, since it uses as much as digits as its factorization.

220205071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 220205071 is about 14839.3083059825. The cubic root of 220205071 is about 603.8685873704.

Adding to 220205071 its reverse (170502022), we get a palindrome (390707093).

The spelling of 220205071 in words is "two hundred twenty million, two hundred five thousand, seventy-one".