20003012320123 has 12 divisors (see below), whose sum is σ = 23304774444912. Its totient is φ = 17118939198480.

The previous prime is 20003012320103. The next prime is 20003012320153. The reversal of 20003012320123 is 32102321030002.

It is not a de Polignac number, because 20003012320123 - 2²⁹ = 20002475449211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20003012320123.

It is not an unprimeable number, because it can be changed into a prime (20003012320103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315443368 + ... + 315506773.

It is an arithmetic number, because the mean of its divisors is an integer number (1942064537076).

Almost surely, 2^{20003012320123} is an apocalyptic number.

20003012320123 is a deficient number, since it is larger than the sum of its proper divisors (3301762124789).

20003012320123 is an equidigital number, since it uses as much as digits as its factorization.

20003012320123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630950802 (or 630950795 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20003012320123 its reverse (32102321030002), we get a palindrome (52105333350125).

The spelling of 20003012320123 in words is "twenty trillion, three billion, twelve million, three hundred twenty thousand, one hundred twenty-three".