2002102001023 has 4 divisors (see below), whose sum is σ = 2002121439400. Its totient is φ = 2002082562648.

The previous prime is 2002102000979. The next prime is 2002102001033. The reversal of 2002102001023 is 3201002012002.

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 2002102001023 - 2²⁵ = 2002068446591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002102000994 and 2002102001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002102001033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9563865 + ... + 9770962.

It is an arithmetic number, because the mean of its divisors is an integer number (500530359850).

Almost surely, 2^{2002102001023} is an apocalyptic number.

2002102001023 is a deficient number, since it is larger than the sum of its proper divisors (19438377).

2002102001023 is a wasteful number, since it uses less digits than its factorization.

2002102001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19438376.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 2002102001023 its reverse (3201002012002), we get a palindrome (5203104013025).

The spelling of 2002102001023 in words is "two trillion, two billion, one hundred two million, one thousand, twenty-three".