2002020021123 has 4 divisors (see below), whose sum is σ = 2669360028168. Its totient is φ = 1334680014080.

The previous prime is 2002020021061. The next prime is 2002020021151. The reversal of 2002020021123 is 3211200202002.

It is a happy number.

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 2002020021123 - 2⁸ = 2002020020867 is a prime.

It is a super-2 number, since 2×2002020021123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2002020023123) 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, 333670003518 + ... + 333670003523.

It is an arithmetic number, because the mean of its divisors is an integer number (667340007042).

Almost surely, 2^{2002020021123} is an apocalyptic number.

2002020021123 is a deficient number, since it is larger than the sum of its proper divisors (667340007045).

2002020021123 is an equidigital number, since it uses as much as digits as its factorization.

2002020021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667340007044.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 2002020021123 its reverse (3211200202002), we get a palindrome (5213220223125).

The spelling of 2002020021123 in words is "two trillion, two billion, twenty million, twenty-one thousand, one hundred twenty-three".