222240517 has 2 divisors, whose sum is σ = 222240518. Its totient is φ = 222240516.

The previous prime is 222240497. The next prime is 222240521. The reversal of 222240517 is 715042222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202606756 + 19633761 = 14234^2 + 4431^2 .

It is a cyclic number.

It is not a de Polignac number, because 222240517 - 2²⁷ = 88022789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222240491 and 222240500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222240527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111120258 + 111120259.

It is an arithmetic number, because the mean of its divisors is an integer number (111120259).

Almost surely, 2^222240517 is an apocalyptic number.

It is an amenable number.

222240517 is a deficient number, since it is larger than the sum of its proper divisors (1).

222240517 is an equidigital number, since it uses as much as digits as its factorization.

222240517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 222240517 is about 14907.7334628709. The cubic root of 222240517 is about 605.7234857300.

Adding to 222240517 its reverse (715042222), we get a palindrome (937282739).

The spelling of 222240517 in words is "two hundred twenty-two million, two hundred forty thousand, five hundred seventeen".