2021222112222 has 16 divisors (see below), whose sum is σ = 4280235061392. Its totient is φ = 634108897920.

The previous prime is 2021222112197. The next prime is 2021222112251. The reversal of 2021222112222 is 2222112221202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9907951429 + ... + 9907951632.

It is an arithmetic number, because the mean of its divisors is an integer number (267514691337).

Almost surely, 2^{2021222112222} is an apocalyptic number.

2021222112222 is an abundant number, since it is smaller than the sum of its proper divisors (2259012949170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021222112222 is a wasteful number, since it uses less digits than its factorization.

2021222112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19815903083.

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

Adding to 2021222112222 its reverse (2222112221202), we get a palindrome (4243334333424).

The spelling of 2021222112222 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, two hundred twenty-two".