240211217 has 2 divisors, whose sum is σ = 240211218. Its totient is φ = 240211216.

The previous prime is 240211193. The next prime is 240211259. The reversal of 240211217 is 712112042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224970001 + 15241216 = 14999^2 + 3904^2 .

It is a cyclic number.

It is not a de Polignac number, because 240211217 - 2¹⁰ = 240210193 is a prime.

It is not a weakly prime, because it can be changed into another prime (240211277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120105608 + 120105609.

It is an arithmetic number, because the mean of its divisors is an integer number (120105609).

Almost surely, 2^240211217 is an apocalyptic number.

It is an amenable number.

240211217 is a deficient number, since it is larger than the sum of its proper divisors (1).

240211217 is an equidigital number, since it uses as much as digits as its factorization.

240211217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 240211217 is about 15498.7488849907. The cubic root of 240211217 is about 621.6287533830.

Adding to 240211217 its reverse (712112042), we get a palindrome (952323259).

The spelling of 240211217 in words is "two hundred forty million, two hundred eleven thousand, two hundred seventeen".