2002120011023 has 16 divisors (see below), whose sum is σ = 2202566535936. Its totient is φ = 1804776200640.

The previous prime is 2002120011019. The next prime is 2002120011077. The reversal of 2002120011023 is 3201100212002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2002120011023 - 2² = 2002120011019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002120010989 and 2002120011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002120011923) 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, 578390 + ... + 2082972.

It is an arithmetic number, because the mean of its divisors is an integer number (137660408496).

Almost surely, 2^{2002120011023} is an apocalyptic number.

2002120011023 is a deficient number, since it is larger than the sum of its proper divisors (200446524913).

2002120011023 is a wasteful number, since it uses less digits than its factorization.

2002120011023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505614.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2002120011023 its reverse (3201100212002), we get a palindrome (5203220223025).

The spelling of 2002120011023 in words is "two trillion, two billion, one hundred twenty million, eleven thousand, twenty-three".