220123 has 2 divisors, whose sum is σ = 220124.
Its totient is φ = 220122.
The previous prime is 220063. The next prime is 220141. The reversal of 220123 is 321022.
Adding to 220123 its reverse (321022), we get a palindrome (541145).
It can be divided in two parts, 220 and 123, that added together give a palindrome (343).
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 220123 - 213 = 211931 is a prime.
It is not a weakly prime, because it can be changed into another prime (220163) 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, 110061 + 110062.
It is an arithmetic number, because the mean of its divisors is an integer number (110062).
2220123 is an apocalyptic number.
220123 is a deficient number, since it is larger than the sum of its proper divisors (1).
220123 is an equidigital number, since it uses as much as digits as its factorization.
220123 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 24, while the sum is 10.
The square root of 220123 is about 469.1726761012.
The cubic root of 220123 is about 60.3793556920.
The spelling of 220123 in words is "two hundred twenty thousand, one hundred twenty-three", and thus it is an iban number.