2440221 has 8 divisors (see below), whose sum is σ = 3718464. Its totient is φ = 1394400.

The previous prime is 2440219. The next prime is 2440223. The reversal of 2440221 is 1220442.

2440221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2440219) and next prime (2440223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2440221 - 2¹ = 2440219 is a prime.

It is a Curzon number.

2440221 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2440221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440223) by changing a digit.

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, 58080 + ... + 58121.

It is an arithmetic number, because the mean of its divisors is an integer number (464808).

2^2440221 is an apocalyptic number.

2440221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2440221 is a deficient number, since it is larger than the sum of its proper divisors (1278243).

2440221 is a wasteful number, since it uses less digits than its factorization.

2440221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116211.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2440221 is about 1562.1206739558. The cubic root of 2440221 is about 134.6303743601.

Adding to 2440221 its reverse (1220442), we get a palindrome (3660663).

The spelling of 2440221 in words is "two million, four hundred forty thousand, two hundred twenty-one".