1223012123 has 2 divisors, whose sum is σ = 1223012124. Its totient is φ = 1223012122.

The previous prime is 1223012081. The next prime is 1223012137. The reversal of 1223012123 is 3212103221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223012123 - 2¹⁶ = 1222946587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1223012173) 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, 611506061 + 611506062.

It is an arithmetic number, because the mean of its divisors is an integer number (611506062).

Almost surely, 2^1223012123 is an apocalyptic number.

1223012123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223012123 is an equidigital number, since it uses as much as digits as its factorization.

1223012123 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 17.

The square root of 1223012123 is about 34971.5902269256. The cubic root of 1223012123 is about 1069.4083907480.

Adding to 1223012123 its reverse (3212103221), we get a palindrome (4435115344).

The spelling of 1223012123 in words is "one billion, two hundred twenty-three million, twelve thousand, one hundred twenty-three".