20010100003123 has 4 divisors (see below), whose sum is σ = 20043505846800. Its totient is φ = 19976694159448.

The previous prime is 20010100003097. The next prime is 20010100003169. The reversal of 20010100003123 is 32130000101002.

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 20010100003123 - 2¹⁷ = 20010099872051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010100003183) 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, 16702920940 + ... + 16702922137.

It is an arithmetic number, because the mean of its divisors is an integer number (5010876461700).

Almost surely, 2^{20010100003123} is an apocalyptic number.

20010100003123 is a deficient number, since it is larger than the sum of its proper divisors (33405843677).

20010100003123 is an equidigital number, since it uses as much as digits as its factorization.

20010100003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33405843676.

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

Adding to 20010100003123 its reverse (32130000101002), we get a palindrome (52140100104125).

The spelling of 20010100003123 in words is "twenty trillion, ten billion, one hundred million, three thousand, one hundred twenty-three".