268220123 has 2 divisors, whose sum is σ = 268220124. Its totient is φ = 268220122.

The previous prime is 268220119. The next prime is 268220129. The reversal of 268220123 is 321022862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268220123 - 2² = 268220119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 268220092 and 268220101.

It is not a weakly prime, because it can be changed into another prime (268220129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134110061 + 134110062.

It is an arithmetic number, because the mean of its divisors is an integer number (134110062).

Almost surely, 2^268220123 is an apocalyptic number.

268220123 is a deficient number, since it is larger than the sum of its proper divisors (1).

268220123 is an equidigital number, since it uses as much as digits as its factorization.

268220123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 268220123 is about 16377.4272399544. The cubic root of 268220123 is about 644.9070418685.

Adding to 268220123 its reverse (321022862), we get a palindrome (589242985).

The spelling of 268220123 in words is "two hundred sixty-eight million, two hundred twenty thousand, one hundred twenty-three".