2221022222 has 12 divisors (see below), whose sum is σ = 3539034600. Its totient is φ = 1045186656.

The previous prime is 2221022201. The next prime is 2221022227. The reversal of 2221022222 is 2222201222.

It is a Harshad number since it is a multiple of its sum of digits (17).

2221022222 is a modest number, since divided by 22222 gives 22210 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2221022222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221022227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1920722 + ... + 1921877.

It is an arithmetic number, because the mean of its divisors is an integer number (294919550).

Almost surely, 2^2221022222 is an apocalyptic number.

2221022222 is a deficient number, since it is larger than the sum of its proper divisors (1318012378).

2221022222 is a wasteful number, since it uses less digits than its factorization.

2221022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842635 (or 3842618 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2221022222 is about 47127.7224359506. The cubic root of 2221022222 is about 1304.7209459944.

Adding to 2221022222 its reverse (2222201222), we get a palindrome (4443223444).

The spelling of 2221022222 in words is "two billion, two hundred twenty-one million, twenty-two thousand, two hundred twenty-two".