2021201222222 has 16 divisors (see below), whose sum is σ = 3731448410592. Its totient is φ = 799596087840.

The previous prime is 2021201222221. The next prime is 2021201222233. The reversal of 2021201222222 is 2222221021202.

It is a junction number, because it is equal to n+sod(n) for n = 2021201222194 and 2021201222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021201222221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5552750429 + ... + 5552750792.

It is an arithmetic number, because the mean of its divisors is an integer number (233215525662).

Almost surely, 2^{2021201222222} is an apocalyptic number.

2021201222222 is a deficient number, since it is larger than the sum of its proper divisors (1710247188370).

2021201222222 is a wasteful number, since it uses less digits than its factorization.

2021201222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105501243.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 2021201222222 its reverse (2222221021202), we get a palindrome (4243422243424).

The spelling of 2021201222222 in words is "two trillion, twenty-one billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty-two".