2002220211121 has 8 divisors (see below), whose sum is σ = 2165184195944. Its totient is φ = 1840534375680.

The previous prime is 2002220211077. The next prime is 2002220211133. The reversal of 2002220211121 is 1211120222002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 210048972721 + 1792171238400 = 458311^2 + 1338720^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2002220211121 - 2²⁵ = 2002186656689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002220211095 and 2002220211104.

It is not an unprimeable number, because it can be changed into a prime (2002220211151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319534086 + ... + 319540351.

It is an arithmetic number, because the mean of its divisors is an integer number (270648024493).

Almost surely, 2^{2002220211121} is an apocalyptic number.

It is an amenable number.

2002220211121 is a deficient number, since it is larger than the sum of its proper divisors (162963984823).

2002220211121 is a wasteful number, since it uses less digits than its factorization.

2002220211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639074691.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2002220211121 its reverse (1211120222002), we get a palindrome (3213340433123).

The spelling of 2002220211121 in words is "two trillion, two billion, two hundred twenty million, two hundred eleven thousand, one hundred twenty-one".