11817213226 has 16 divisors (see below), whose sum is σ = 21816393984. Its totient is φ = 4674941424.

The previous prime is 11817213203. The next prime is 11817213307. The reversal of 11817213226 is 62231271811.

It is a junction number, because it is equal to n+sod(n) for n = 11817213191 and 11817213200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32464690 + ... + 32465053.

It is an arithmetic number, because the mean of its divisors is an integer number (1363524624).

Almost surely, 2^11817213226 is an apocalyptic number.

11817213226 is a deficient number, since it is larger than the sum of its proper divisors (9999180758).

11817213226 is a wasteful number, since it uses less digits than its factorization.

11817213226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64929765.

The product of its digits is 8064, while the sum is 34.

The spelling of 11817213226 in words is "eleven billion, eight hundred seventeen million, two hundred thirteen thousand, two hundred twenty-six".