2222122210221 has 16 divisors (see below), whose sum is σ = 3084589745984. Its totient is φ = 1421631679104.

The previous prime is 2222122210181. The next prime is 2222122210271. The reversal of 2222122210221 is 1220122212222.

It is not a de Polignac number, because 2222122210221 - 2⁷ = 2222122210093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222122210271) 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, 137109151 + ... + 137125356.

It is an arithmetic number, because the mean of its divisors is an integer number (192786859124).

Almost surely, 2^{2222122210221} is an apocalyptic number.

It is an amenable number.

2222122210221 is a deficient number, since it is larger than the sum of its proper divisors (862467535763).

2222122210221 is a wasteful number, since it uses less digits than its factorization.

2222122210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274234620.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2222122210221 its reverse (1220122212222), we get a palindrome (3442244422443).

The spelling of 2222122210221 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred ten thousand, two hundred twenty-one".