1000012000123 has 4 divisors (see below), whose sum is σ = 1000014000160. Its totient is φ = 1000010000088.

The previous prime is 1000012000109. The next prime is 1000012000139. The reversal of 1000012000123 is 3210002100001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1000012000123 - 2³⁷ = 862573046651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000012000523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492661 + ... + 1497577.

It is an arithmetic number, because the mean of its divisors is an integer number (250003500040).

Almost surely, 2^{1000012000123} is an apocalyptic number.

1000012000123 is a deficient number, since it is larger than the sum of its proper divisors (2000037).

1000012000123 is an equidigital number, since it uses as much as digits as its factorization.

1000012000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000036.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 1000012000123 its reverse (3210002100001), we get a palindrome (4210014100124).

The spelling of 1000012000123 in words is "one trillion, twelve million, one hundred twenty-three", and thus it is an aban number.