11217001305 has 16 divisors (see below), whose sum is σ = 17948750400. Its totient is φ = 5981884608.

The previous prime is 11217001303. The next prime is 11217001309. The reversal of 11217001305 is 50310071211.

It is a happy number.

It is not a de Polignac number, because 11217001305 - 2¹ = 11217001303 is a prime.

It is a super-2 number, since 2×11217001305² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11217001303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202554 + ... + 251916.

It is an arithmetic number, because the mean of its divisors is an integer number (1121796900).

Almost surely, 2^11217001305 is an apocalyptic number.

11217001305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11217001305 is a deficient number, since it is larger than the sum of its proper divisors (6731749095).

11217001305 is a wasteful number, since it uses less digits than its factorization.

11217001305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64520.

The product of its (nonzero) digits is 210, while the sum is 21.

Adding to 11217001305 its reverse (50310071211), we get a palindrome (61527072516).

The spelling of 11217001305 in words is "eleven billion, two hundred seventeen million, one thousand, three hundred five".