2002221222221 has 16 divisors (see below), whose sum is σ = 2221506846720. Its totient is φ = 1789153308720.

The previous prime is 2002221222187. The next prime is 2002221222227. The reversal of 2002221222221 is 1222221222002.

It is a cyclic number.

It is not a de Polignac number, because 2002221222221 - 2²² = 2002217027917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002221222193 and 2002221222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002221222227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5898506 + ... + 6228708.

It is an arithmetic number, because the mean of its divisors is an integer number (138844177920).

Almost surely, 2^{2002221222221} is an apocalyptic number.

It is an amenable number.

2002221222221 is a deficient number, since it is larger than the sum of its proper divisors (219285624499).

2002221222221 is a wasteful number, since it uses less digits than its factorization.

2002221222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339616.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 2002221222221 its reverse (1222221222002), we get a palindrome (3224442444223).

The spelling of 2002221222221 in words is "two trillion, two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".