2211240666 has 16 divisors (see below), whose sum is σ = 4505925024. Its totient is φ = 723172944.

The previous prime is 2211240637. The next prime is 2211240673. The reversal of 2211240666 is 6660421122.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 3476476 + ... + 3477111.

It is an arithmetic number, because the mean of its divisors is an integer number (281620314).

Almost surely, 2^2211240666 is an apocalyptic number.

2211240666 is an abundant number, since it is smaller than the sum of its proper divisors (2294684358).

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

2211240666 is a wasteful number, since it uses less digits than its factorization.

2211240666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6953645.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2211240666 is about 47023.8308307607. The cubic root of 2211240666 is about 1302.8027628427.

Adding to 2211240666 its reverse (6660421122), we get a palindrome (8871661788).

The spelling of 2211240666 in words is "two billion, two hundred eleven million, two hundred forty thousand, six hundred sixty-six".