20123010011003 has 4 divisors (see below), whose sum is σ = 20128391937720. Its totient is φ = 20117628084288.

The previous prime is 20123010010993. The next prime is 20123010011099. The reversal of 20123010011003 is 30011001032102.

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 20123010011003 - 2¹⁰ = 20123010009979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123010091003) 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, 2690957750 + ... + 2690965227.

It is an arithmetic number, because the mean of its divisors is an integer number (5032097984430).

Almost surely, 2^{20123010011003} is an apocalyptic number.

20123010011003 is a deficient number, since it is larger than the sum of its proper divisors (5381926717).

20123010011003 is an equidigital number, since it uses as much as digits as its factorization.

20123010011003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381926716.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20123010011003 its reverse (30011001032102), we get a palindrome (50134011043105).

The spelling of 20123010011003 in words is "twenty trillion, one hundred twenty-three billion, ten million, eleven thousand, three".