2202222222 has 16 divisors (see below), whose sum is σ = 4893827280. Its totient is φ = 734074056.

The previous prime is 2202222179. The next prime is 2202222223. The reversal of 2202222222 is 2222222022.

2202222222 is a `hidden beast` number, since 220 + 2 + 222 + 222 = 666.

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

2202222222 is a modest number, since divided by 22222 gives 22022 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2202222195 and 2202222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202222223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20390893 + ... + 20391000.

It is an arithmetic number, because the mean of its divisors is an integer number (305864205).

Almost surely, 2^2202222222 is an apocalyptic number.

2202222222 is an abundant number, since it is smaller than the sum of its proper divisors (2691605058).

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

2202222222 is a wasteful number, since it uses less digits than its factorization.

2202222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40781904 (or 40781898 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2202222222 is about 46927.8405853071. The cubic root of 2202222222 is about 1301.0292090241.

Adding to 2202222222 its reverse (2222222022), we get a palindrome (4424444244).

It can be divided in two parts, 22022 and 22222, that added together give a palindrome (44244).

The spelling of 2202222222 in words is "two billion, two hundred two million, two hundred twenty-two thousand, two hundred twenty-two".