2002002222121 has 4 divisors (see below), whose sum is σ = 2184002424144. Its totient is φ = 1820002020100.

The previous prime is 2002002222109. The next prime is 2002002222151. The reversal of 2002002222121 is 1212222002002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2002002222121 - 2⁵ = 2002002222089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002002222095 and 2002002222104.

It is not an unprimeable number, because it can be changed into a prime (2002002222151) 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, 91000100995 + ... + 91000101016.

It is an arithmetic number, because the mean of its divisors is an integer number (546000606036).

Almost surely, 2^{2002002222121} is an apocalyptic number.

It is an amenable number.

2002002222121 is a deficient number, since it is larger than the sum of its proper divisors (182000202023).

2002002222121 is a wasteful number, since it uses less digits than its factorization.

2002002222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182000202022.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2002002222121 its reverse (1212222002002), we get a palindrome (3214224224123).

The spelling of 2002002222121 in words is "two trillion, two billion, two million, two hundred twenty-two thousand, one hundred twenty-one".