4021122222 has 24 divisors (see below), whose sum is σ = 9382619064. Its totient is φ = 1237268304.

The previous prime is 4021122211. The next prime is 4021122227. The reversal of 4021122222 is 2222211204.

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 = 4021122195 and 4021122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021122227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8591908 + ... + 8592375.

It is an arithmetic number, because the mean of its divisors is an integer number (390942461).

Almost surely, 2^4021122222 is an apocalyptic number.

4021122222 is an abundant number, since it is smaller than the sum of its proper divisors (5361496842).

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

4021122222 is a wasteful number, since it uses less digits than its factorization.

4021122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17184304 (or 17184301 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4021122222 is about 63412.3191659160. The cubic root of 4021122222 is about 1590.1902679628.

Adding to 4021122222 its reverse (2222211204), we get a palindrome (6243333426).

The spelling of 4021122222 in words is "four billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".