2021322222 has 32 divisors (see below), whose sum is σ = 4601388960. Its totient is φ = 657339840.

The previous prime is 2021322209. The next prime is 2021322227. The reversal of 2021322222 is 2222231202.

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 = 2021322195 and 2021322204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021322227) 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, 454273 + ... + 458700.

It is an arithmetic number, because the mean of its divisors is an integer number (143793405).

Almost surely, 2^2021322222 is an apocalyptic number.

2021322222 is an abundant number, since it is smaller than the sum of its proper divisors (2580066738).

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

2021322222 is a wasteful number, since it uses less digits than its factorization.

2021322222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913025 (or 913019 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2021322222 is about 44959.1172288781. The cubic root of 2021322222 is about 1264.3826182218.

Adding to 2021322222 its reverse (2222231202), we get a palindrome (4243553424).

The spelling of 2021322222 in words is "two billion, twenty-one million, three hundred twenty-two thousand, two hundred twenty-two".