123123000001 has 4 divisors (see below), whose sum is σ = 124273682352. Its totient is φ = 121972317652.

The previous prime is 123122999977. The next prime is 123123000017. The reversal of 123123000001 is 100000321321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100000321321 = 2657 ⋅37636553.

It is a cyclic number.

It is not a de Polignac number, because 123123000001 - 2⁵ = 123122999969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123123003001) 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 in 3 ways as a sum of consecutive naturals, for example, 575341015 + ... + 575341228.

It is an arithmetic number, because the mean of its divisors is an integer number (31068420588).

Almost surely, 2^123123000001 is an apocalyptic number.

It is an amenable number.

123123000001 is a deficient number, since it is larger than the sum of its proper divisors (1150682351).

123123000001 is a wasteful number, since it uses less digits than its factorization.

123123000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150682350.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 123123000001 its reverse (100000321321), we get a palindrome (223123321322).

The spelling of 123123000001 in words is "one hundred twenty-three billion, one hundred twenty-three million, one", and thus it is an aban number.