220423211 has 2 divisors, whose sum is σ = 220423212. Its totient is φ = 220423210.

The previous prime is 220423201. The next prime is 220423213. The reversal of 220423211 is 112324022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220423211 is a prime.

Together with 220423213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220423211.

It is not a weakly prime, because it can be changed into another prime (220423213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110211605 + 110211606.

It is an arithmetic number, because the mean of its divisors is an integer number (110211606).

Almost surely, 2^220423211 is an apocalyptic number.

220423211 is a deficient number, since it is larger than the sum of its proper divisors (1).

220423211 is an equidigital number, since it uses as much as digits as its factorization.

220423211 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 17.

The square root of 220423211 is about 14846.6565596433. The cubic root of 220423211 is about 604.0679234097.

Adding to 220423211 its reverse (112324022), we get a palindrome (332747233).

The spelling of 220423211 in words is "two hundred twenty million, four hundred twenty-three thousand, two hundred eleven".