1122212222 has 8 divisors (see below), whose sum is σ = 1704626400. Its totient is φ = 554003424.

The previous prime is 1122212213. The next prime is 1122212239. The reversal of 1122212222 is 2222122211.

It is a happy number.

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.

It is a self number, because there is not a number n which added to its sum of digits gives 1122212222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3551147 + ... + 3551462.

It is an arithmetic number, because the mean of its divisors is an integer number (213078300).

Almost surely, 2^1122212222 is an apocalyptic number.

1122212222 is a deficient number, since it is larger than the sum of its proper divisors (582414178).

1122212222 is an equidigital number, since it uses as much as digits as its factorization.

1122212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7102690.

The product of its digits is 128, while the sum is 17.

The square root of 1122212222 is about 33499.4361445085. The cubic root of 1122212222 is about 1039.1821176901.

Adding to 1122212222 its reverse (2222122211), we get a palindrome (3344334433).

The spelling of 1122212222 in words is "one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".