1222100017 has 2 divisors, whose sum is σ = 1222100018. Its totient is φ = 1222100016.

The previous prime is 1222099999. The next prime is 1222100039. The reversal of 1222100017 is 7100012221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772617616 + 449482401 = 27796^2 + 21201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222100017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222101017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611050008 + 611050009.

It is an arithmetic number, because the mean of its divisors is an integer number (611050009).

Almost surely, 2^1222100017 is an apocalyptic number.

It is an amenable number.

1222100017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222100017 is an equidigital number, since it uses as much as digits as its factorization.

1222100017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 1222100017 is about 34958.5471237007. The cubic root of 1222100017 is about 1069.1424744977.

Adding to 1222100017 its reverse (7100012221), we get a palindrome (8322112238).

The spelling of 1222100017 in words is "one billion, two hundred twenty-two million, one hundred thousand, seventeen".