11121223 has 2 divisors, whose sum is σ = 11121224.
Its totient is φ = 11121222.
The previous prime is 11121217. The next prime is 11121307. The reversal of 11121223 is 32212111.
11121223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is an emirp because it is prime and its reverse (32212111) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 11121223 - 213 = 11113031 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (11121823) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560611 + 5560612.
It is an arithmetic number, because the mean of its divisors is an integer number (5560612).
Almost surely, 211121223 is an apocalyptic number.
11121223 is a deficient number, since it is larger than the sum of its proper divisors (1).
11121223 is an equidigital number, since it uses as much as digits as its factorization.
11121223 is an evil number, because the sum of its binary digits is even.
The product of its digits is 24, while the sum is 13.
The square root of 11121223 is about 3334.8497717289.
The cubic root of 11121223 is about 223.2119884856.
Adding to 11121223 its reverse (32212111), we get a palindrome (43333334).
The spelling of 11121223 in words is "eleven million, one hundred twenty-one thousand, two hundred twenty-three".