11808222233 has 4 divisors (see below), whose sum is σ = 12215402340. Its totient is φ = 11401042128.

The previous prime is 11808222157. The next prime is 11808222247. The reversal of 11808222233 is 33222280811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2835775504 + 8972446729 = 53252^2 + 94723^2 .

It is a cyclic number.

It is not a de Polignac number, because 11808222233 - 2⁸ = 11808221977 is a prime.

It is a super-2 number, since 2×11808222233² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11808222233.

It is not an unprimeable number, because it can be changed into a prime (11808222533) 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 3 ways as a sum of consecutive naturals, for example, 203590010 + ... + 203590067.

It is an arithmetic number, because the mean of its divisors is an integer number (3053850585).

Almost surely, 2^11808222233 is an apocalyptic number.

It is an amenable number.

11808222233 is a deficient number, since it is larger than the sum of its proper divisors (407180107).

11808222233 is an equidigital number, since it uses as much as digits as its factorization.

11808222233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407180106.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 11808222233 in words is "eleven billion, eight hundred eight million, two hundred twenty-two thousand, two hundred thirty-three".