11217427318 has 8 divisors (see below), whose sum is σ = 16830943920. Its totient is φ = 5607112680.

The previous prime is 11217427297. The next prime is 11217427321. The reversal of 11217427318 is 81372471211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11217427318² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 791713 + ... + 805756.

It is an arithmetic number, because the mean of its divisors is an integer number (2103867990).

Almost surely, 2^11217427318 is an apocalyptic number.

11217427318 is a deficient number, since it is larger than the sum of its proper divisors (5613516602).

11217427318 is a wasteful number, since it uses less digits than its factorization.

11217427318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600982.

The product of its digits is 18816, while the sum is 37.

Adding to 11217427318 its reverse (81372471211), we get a palindrome (92589898529).

The spelling of 11217427318 in words is "eleven billion, two hundred seventeen million, four hundred twenty-seven thousand, three hundred eighteen".