2001002103 has 8 divisors (see below), whose sum is σ = 2964447600. Its totient is φ = 1334001384.

The previous prime is 2001002077. The next prime is 2001002137. The reversal of 2001002103 is 3012001002.

It is a happy number.

It is not a de Polignac number, because 2001002103 - 2¹⁴ = 2000985719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001002173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37055568 + ... + 37055621.

It is an arithmetic number, because the mean of its divisors is an integer number (370555950).

Almost surely, 2^2001002103 is an apocalyptic number.

2001002103 is a deficient number, since it is larger than the sum of its proper divisors (963445497).

2001002103 is an equidigital number, since it uses as much as digits as its factorization.

2001002103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74111198 (or 74111192 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2001002103 is about 44732.5619990628. The cubic root of 2001002103 is about 1260.1314432035.

Adding to 2001002103 its reverse (3012001002), we get a palindrome (5013003105).

The spelling of 2001002103 in words is "two billion, one million, two thousand, one hundred three".