1001001217 has 2 divisors, whose sum is σ = 1001001218. Its totient is φ = 1001001216.

The previous prime is 1001001151. The next prime is 1001001223. The reversal of 1001001217 is 7121001001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896164096 + 104837121 = 29936^2 + 10239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001001217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001001197 and 1001001206.

It is not a weakly prime, because it can be changed into another prime (1001001227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500500608 + 500500609.

It is an arithmetic number, because the mean of its divisors is an integer number (500500609).

Almost surely, 2^1001001217 is an apocalyptic number.

It is an amenable number.

1001001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001001217 is an equidigital number, since it uses as much as digits as its factorization.

1001001217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 1001001217 is about 31638.6032719524. The cubic root of 1001001217 is about 1000.3336276802. Note that the first 3 decimals are identical.

Adding to 1001001217 its reverse (7121001001), we get a palindrome (8122002218).

The spelling of 1001001217 in words is "one billion, one million, one thousand, two hundred seventeen".