221300030123 has 2 divisors, whose sum is σ = 221300030124. Its totient is φ = 221300030122.

The previous prime is 221300030101. The next prime is 221300030173. The reversal of 221300030123 is 321030003122.

221300030123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221300030123 - 2¹⁰ = 221300029099 is a prime.

It is not a weakly prime, because it can be changed into another prime (221300030173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110650015061 + 110650015062.

It is an arithmetic number, because the mean of its divisors is an integer number (110650015062).

Almost surely, 2^221300030123 is an apocalyptic number.

221300030123 is a deficient number, since it is larger than the sum of its proper divisors (1).

221300030123 is an equidigital number, since it uses as much as digits as its factorization.

221300030123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 221300030123 its reverse (321030003122), we get a palindrome (542330033245).

The spelling of 221300030123 in words is "two hundred twenty-one billion, three hundred million, thirty thousand, one hundred twenty-three".