2022222211221 has 16 divisors (see below), whose sum is σ = 2880567910400. Its totient is φ = 1258130391408.

The previous prime is 2022222211181. The next prime is 2022222211301. The reversal of 2022222211221 is 1221122222202.

It is not a de Polignac number, because 2022222211221 - 2⁶ = 2022222211157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022222211921) 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, 264754261 + ... + 264761898.

It is an arithmetic number, because the mean of its divisors is an integer number (180035494400).

Almost surely, 2^{2022222211221} is an apocalyptic number.

It is an amenable number.

2022222211221 is a deficient number, since it is larger than the sum of its proper divisors (858345699179).

2022222211221 is a wasteful number, since it uses less digits than its factorization.

2022222211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529516248.

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

Adding to 2022222211221 its reverse (1221122222202), we get a palindrome (3243344433423).

The spelling of 2022222211221 in words is "two trillion, twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, two hundred twenty-one".