2002211123221 has 4 divisors (see below), whose sum is σ = 2014200411552. Its totient is φ = 1990221834892.

The previous prime is 2002211123203. The next prime is 2002211123243. The reversal of 2002211123221 is 1223211122002.

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 a cyclic number.

It is not a de Polignac number, because 2002211123221 - 2⁷ = 2002211123093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002211123251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5994643915 + ... + 5994644248.

It is an arithmetic number, because the mean of its divisors is an integer number (503550102888).

Almost surely, 2^{2002211123221} is an apocalyptic number.

It is an amenable number.

2002211123221 is a deficient number, since it is larger than the sum of its proper divisors (11989288331).

2002211123221 is a wasteful number, since it uses less digits than its factorization.

2002211123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11989288330.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2002211123221 its reverse (1223211122002), we get a palindrome (3225422245223).

The spelling of 2002211123221 in words is "two trillion, two billion, two hundred eleven million, one hundred twenty-three thousand, two hundred twenty-one".