123123000019 has 2 divisors, whose sum is σ = 123123000020. Its totient is φ = 123123000018.

The previous prime is 123123000017. The next prime is 123123000029. The reversal of 123123000019 is 910000321321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123123000019 - 2¹ = 123123000017 is a prime.

It is a super-2 number, since 2×123123000019² (a number of 23 digits) contains 22 as substring.

Together with 123123000017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123123000017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61561500009 + 61561500010.

It is an arithmetic number, because the mean of its divisors is an integer number (61561500010).

Almost surely, 2^123123000019 is an apocalyptic number.

123123000019 is a deficient number, since it is larger than the sum of its proper divisors (1).

123123000019 is an equidigital number, since it uses as much as digits as its factorization.

123123000019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 123123000019 in words is "one hundred twenty-three billion, one hundred twenty-three million, nineteen", and thus it is an aban number.