2122222222 has 8 divisors (see below), whose sum is σ = 3183534216. Its totient is φ = 1061044152.

The previous prime is 2122222199. The next prime is 2122222231. The reversal of 2122222222 is 2222222212.

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

It is a nude number because it is divisible by every one of its digits.

2122222222 is a modest number, since divided by 22222 gives 21222 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2122222222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30888 + ... + 72100.

It is an arithmetic number, because the mean of its divisors is an integer number (397941777).

Almost surely, 2^2122222222 is an apocalyptic number.

2122222222 is a deficient number, since it is larger than the sum of its proper divisors (1061311994).

2122222222 is a wasteful number, since it uses less digits than its factorization.

2122222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66962.

The product of its digits is 512, while the sum is 19.

The square root of 2122222222 is about 46067.5832012056. The cubic root of 2122222222 is about 1285.0803589468.

Adding to 2122222222 its reverse (2222222212), we get a palindrome (4344444434).

The spelling of 2122222222 in words is "two billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".