1000012217 has 2 divisors, whose sum is σ = 1000012218. Its totient is φ = 1000012216.

The previous prime is 1000012187. The next prime is 1000012219. The reversal of 1000012217 is 7122100001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 966961216 + 33051001 = 31096^2 + 5749^2 .

It is an emirp because it is prime and its reverse (7122100001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000012217 - 2²⁶ = 932903353 is a prime.

Together with 1000012219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1000012219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500006108 + 500006109.

It is an arithmetic number, because the mean of its divisors is an integer number (500006109).

Almost surely, 2^1000012217 is an apocalyptic number.

It is an amenable number.

1000012217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000012217 is an equidigital number, since it uses as much as digits as its factorization.

1000012217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 1000012217 is about 31622.9697688247. The cubic root of 1000012217 is about 1000.0040723167.

Adding to 1000012217 its reverse (7122100001), we get a palindrome (8122112218).

The spelling of 1000012217 in words is "one billion, twelve thousand, two hundred seventeen".