11217001309 has 2 divisors, whose sum is σ = 11217001310. Its totient is φ = 11217001308.

The previous prime is 11217001303. The next prime is 11217001339. The reversal of 11217001309 is 90310071211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11198295684 + 18705625 = 105822^2 + 4325^2 .

It is a cyclic number.

It is not a de Polignac number, because 11217001309 - 2¹⁵ = 11216968541 is a prime.

It is a super-2 number, since 2×11217001309² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11217001303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608500654 + 5608500655.

It is an arithmetic number, because the mean of its divisors is an integer number (5608500655).

Almost surely, 2^11217001309 is an apocalyptic number.

It is an amenable number.

11217001309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11217001309 is an equidigital number, since it uses as much as digits as its factorization.

11217001309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 25.

The spelling of 11217001309 in words is "eleven billion, two hundred seventeen million, one thousand, three hundred nine".