2211221112 has 32 divisors (see below), whose sum is σ = 5539622400. Its totient is φ = 735531104.

The previous prime is 2211221107. The next prime is 2211221113. The reversal of 2211221112 is 2111221122.

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 = 2211221091 and 2211221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211221113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84678 + ... + 107669.

It is an arithmetic number, because the mean of its divisors is an integer number (173113200).

Almost surely, 2^2211221112 is an apocalyptic number.

It is an amenable number.

2211221112 is an abundant number, since it is smaller than the sum of its proper divisors (3328401288).

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

2211221112 is a wasteful number, since it uses less digits than its factorization.

2211221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192835 (or 192831 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 2211221112 is about 47023.6229144459. The cubic root of 2211221112 is about 1302.7989226034.

Adding to 2211221112 its reverse (2111221122), we get a palindrome (4322442234).

The spelling of 2211221112 in words is "two billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twelve".