2011231222 has 64 divisors (see below), whose sum is σ = 4074706944. Its totient is φ = 719015040.

The previous prime is 2011231219. The next prime is 2011231231. The reversal of 2011231222 is 2221321102.

It is a happy number.

It is a super-2 number, since 2×2011231222² = 8090102056695226568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011231196 and 2011231205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343443 + ... + 349249.

It is an arithmetic number, because the mean of its divisors is an integer number (63667296).

Almost surely, 2^2011231222 is an apocalyptic number.

2011231222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2011231222 is an abundant number, since it is smaller than the sum of its proper divisors (2063475722).

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

2011231222 is a wasteful number, since it uses less digits than its factorization.

2011231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6013.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2011231222 is about 44846.7526360605. The cubic root of 2011231222 is about 1262.2750578163.

Adding to 2011231222 its reverse (2221321102), we get a palindrome (4232552324).

The spelling of 2011231222 in words is "two billion, eleven million, two hundred thirty-one thousand, two hundred twenty-two".