11121223233209 has 2 divisors, whose sum is σ = 11121223233210. Its totient is φ = 11121223233208.

The previous prime is 11121223233187. The next prime is 11121223233233. The reversal of 11121223233209 is 90233232212111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6870018429184 + 4251204804025 = 2621072^2 + 2061845^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121223233209 - 2²⁴ = 11121206455993 is a prime.

It is not a weakly prime, because it can be changed into another prime (11121223233299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560611616604 + 5560611616605.

It is an arithmetic number, because the mean of its divisors is an integer number (5560611616605).

Almost surely, 2^{11121223233209} is an apocalyptic number.

It is an amenable number.

11121223233209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121223233209 is an equidigital number, since it uses as much as digits as its factorization.

11121223233209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 11121223233209 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty-three million, two hundred thirty-three thousand, two hundred nine".