123230000221 has 2 divisors, whose sum is σ = 123230000222. Its totient is φ = 123230000220.

The previous prime is 123230000203. The next prime is 123230000227. The reversal of 123230000221 is 122000032321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98508727321 + 24721272900 = 313861^2 + 157230^2 .

It is an emirp because it is prime and its reverse (122000032321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123230000221 - 2¹³ = 123229992029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123230000195 and 123230000204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123230000227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615000110 + 61615000111.

It is an arithmetic number, because the mean of its divisors is an integer number (61615000111).

Almost surely, 2^123230000221 is an apocalyptic number.

It is an amenable number.

123230000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

123230000221 is an equidigital number, since it uses as much as digits as its factorization.

123230000221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 123230000221 its reverse (122000032321), we get a palindrome (245230032542).

The spelling of 123230000221 in words is "one hundred twenty-three billion, two hundred thirty million, two hundred twenty-one", and thus it is an aban number.