2001023120103 has 16 divisors (see below), whose sum is σ = 3228541505280. Its totient is φ = 1076180501376.

The previous prime is 2001023120093. The next prime is 2001023120123. The reversal of 2001023120103 is 3010213201002.

It is not a de Polignac number, because 2001023120103 - 2⁹ = 2001023119591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001023120123) 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 15 ways as a sum of consecutive naturals, for example, 2802553033 + ... + 2802553746.

It is an arithmetic number, because the mean of its divisors is an integer number (201783844080).

Almost surely, 2^{2001023120103} is an apocalyptic number.

2001023120103 is a deficient number, since it is larger than the sum of its proper divisors (1227518385177).

2001023120103 is a wasteful number, since it uses less digits than its factorization.

2001023120103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605106806.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 2001023120103 its reverse (3010213201002), we get a palindrome (5011236321105).

The spelling of 2001023120103 in words is "two trillion, one billion, twenty-three million, one hundred twenty thousand, one hundred three".