11817222 has 16 divisors (see below), whose sum is σ = 23768640. Its totient is φ = 3916712.

The previous prime is 11817199. The next prime is 11817229. The reversal of 11817222 is 22271811.

It is a junction number, because it is equal to n+sod(n) for n = 11817192 and 11817201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11817229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4428 + ... + 6575.

It is an arithmetic number, because the mean of its divisors is an integer number (1485540).

Almost surely, 2^11817222 is an apocalyptic number.

11817222 is an abundant number, since it is smaller than the sum of its proper divisors (11951418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11817222 is a wasteful number, since it uses less digits than its factorization.

11817222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11187.

The product of its digits is 448, while the sum is 24.

The square root of 11817222 is about 3437.6186524977. The cubic root of 11817222 is about 227.7745154577.

The spelling of 11817222 in words is "eleven million, eight hundred seventeen thousand, two hundred twenty-two".