240107221 has 4 divisors (see below), whose sum is σ = 240450444. Its totient is φ = 239764000.

The previous prime is 240107209. The next prime is 240107233. The reversal of 240107221 is 122701042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (240107209) and next prime (240107233).

It can be written as a sum of positive squares in 2 ways, for example, as 162843121 + 77264100 = 12761^2 + 8790^2 .

It is a cyclic number.

It is not a de Polignac number, because 240107221 - 2¹⁵ = 240074453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240107321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170560 + ... + 171961.

It is an arithmetic number, because the mean of its divisors is an integer number (60112611).

Almost surely, 2^240107221 is an apocalyptic number.

It is an amenable number.

240107221 is a deficient number, since it is larger than the sum of its proper divisors (343223).

240107221 is an equidigital number, since it uses as much as digits as its factorization.

240107221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343222.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 240107221 is about 15495.3935413077. The cubic root of 240107221 is about 621.5390320172.

Adding to 240107221 its reverse (122701042), we get a palindrome (362808263).

The spelling of 240107221 in words is "two hundred forty million, one hundred seven thousand, two hundred twenty-one".