240022217 has 2 divisors, whose sum is σ = 240022218. Its totient is φ = 240022216.

The previous prime is 240022187. The next prime is 240022229. The reversal of 240022217 is 712220042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235438336 + 4583881 = 15344^2 + 2141^2 .

It is a cyclic number.

It is not a de Polignac number, because 240022217 - 2²⁶ = 172913353 is a prime.

It is a super-2 number, since 2×240022217² = 115221329307190178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240022247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120011108 + 120011109.

It is an arithmetic number, because the mean of its divisors is an integer number (120011109).

Almost surely, 2^240022217 is an apocalyptic number.

It is an amenable number.

240022217 is a deficient number, since it is larger than the sum of its proper divisors (1).

240022217 is an equidigital number, since it uses as much as digits as its factorization.

240022217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 240022217 is about 15492.6504188276. The cubic root of 240022217 is about 621.4656765393.

Adding to 240022217 its reverse (712220042), we get a palindrome (952242259).

The spelling of 240022217 in words is "two hundred forty million, twenty-two thousand, two hundred seventeen".