2021112120222 has 48 divisors (see below), whose sum is σ = 4724305015248. Its totient is φ = 620776028160.

The previous prime is 2021112120089. The next prime is 2021112120289. The reversal of 2021112120222 is 2220212111202.

It is a happy number.

2021112120222 is a `hidden beast` number, since 20 + 211 + 1 + 212 + 0 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2021112120195 and 2021112120204.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 7538979 + ... + 7802462.

It is an arithmetic number, because the mean of its divisors is an integer number (98423021151).

Almost surely, 2^{2021112120222} is an apocalyptic number.

2021112120222 is an abundant number, since it is smaller than the sum of its proper divisors (2703192895026).

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

2021112120222 is a wasteful number, since it uses less digits than its factorization.

2021112120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15342025 (or 15342022 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2021112120222 its reverse (2220212111202), we get a palindrome (4241324231424).

The spelling of 2021112120222 in words is "two trillion, twenty-one billion, one hundred twelve million, one hundred twenty thousand, two hundred twenty-two".