2021122222 has 8 divisors (see below), whose sum is σ = 3464780976. Its totient is φ = 866195232.

The previous prime is 2021122219. The next prime is 2021122241. The reversal of 2021122222 is 2222211202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2021122196 and 2021122205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72182923 + ... + 72182950.

It is an arithmetic number, because the mean of its divisors is an integer number (433097622).

Almost surely, 2^2021122222 is an apocalyptic number.

2021122222 is a deficient number, since it is larger than the sum of its proper divisors (1443658754).

2021122222 is a wasteful number, since it uses less digits than its factorization.

2021122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144365882.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2021122222 is about 44956.8929308955. The cubic root of 2021122222 is about 1264.3409153435.

Adding to 2021122222 its reverse (2222211202), we get a palindrome (4243333424).

The spelling of 2021122222 in words is "two billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".