2211240 has 32 divisors (see below), whose sum is σ = 6634080. Its totient is φ = 589632.

The previous prime is 2211233. The next prime is 2211257. The reversal of 2211240 is 421122.

2211240 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9094 + ... + 9333.

It is an arithmetic number, because the mean of its divisors is an integer number (207315).

2^2211240 is an apocalyptic number.

2211240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211240 is an abundant number, since it is smaller than the sum of its proper divisors (4422840).

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

2211240 is a wasteful number, since it uses less digits than its factorization.

2211240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18441 (or 18437 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2211240 is about 1487.0238733793. The cubic root of 2211240 is about 130.2802632046.

Adding to 2211240 its reverse (421122), we get a palindrome (2632362).

The spelling of 2211240 in words is "two million, two hundred eleven thousand, two hundred forty".