1222111222 has 8 divisors (see below), whose sum is σ = 1860527736. Its totient is φ = 601935312.

The previous prime is 1222111207. The next prime is 1222111273. The reversal of 1222111222 is 2221112221.

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 junction number, because it is equal to n+sod(n) for n = 1222111196 and 1222111205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4559983 + ... + 4560250.

It is an arithmetic number, because the mean of its divisors is an integer number (232565967).

Almost surely, 2^1222111222 is an apocalyptic number.

1222111222 is a deficient number, since it is larger than the sum of its proper divisors (638416514).

1222111222 is an equidigital number, since it uses as much as digits as its factorization.

1222111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9120302.

The product of its digits is 64, while the sum is 16.

The square root of 1222111222 is about 34958.7073845702. The cubic root of 1222111222 is about 1069.1457420166.

Adding to 1222111222 its reverse (2221112221), we get a palindrome (3443223443).

Subtracting 1222111222 from its reverse (2221112221), we obtain a palindrome (999000999).

The spelling of 1222111222 in words is "one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".