2221112211 has 12 divisors (see below), whose sum is σ = 3060100296.
Its totient is φ = 1432973760.
The previous prime is 2221112207. The next prime is 2221112219. The reversal of 2221112211 is 1122111222.
2221112211 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 2221112211 - 22 = 2221112207 is a prime.
It is a zygodrome in base 10.
It is not an unprimeable number, because it can be changed into a prime (2221112219) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382326 + ... + 388091.
It is an arithmetic number, because the mean of its divisors is an integer number (255008358).
Almost surely, 22221112211 is an apocalyptic number.
2221112211 is a deficient number, since it is larger than the sum of its proper divisors (838988085).
2221112211 is an equidigital number, since it uses as much as digits as its factorization.
2221112211 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 770482 (or 770451 counting only the distinct ones).
The product of its digits is 32, while the sum is 15.
The square root of 2221112211 is about 47128.6771615754.
The cubic root of 2221112211 is about 1304.7385668518.
Adding to 2221112211 its reverse (1122111222), we get a palindrome (3343223433).
It can be divided in two parts, 222111221 and 1, that added together give a palindrome (222111222).
The spelling of 2221112211 in words is "two billion, two hundred twenty-one million, one hundred twelve thousand, two hundred eleven".