1123219 has 2 divisors, whose sum is σ = 1123220.
Its totient is φ = 1123218.
The previous prime is 1123217. The next prime is 1123231. The reversal of 1123219 is 9123211.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1123219 - 21 = 1123217 is a prime.
It is a super-2 number, since 2×11232192 = 2523241843922, which contains 22 as substring.
Together with 1123217, it forms a pair of twin primes.
1123219 is a lucky number.
It is a junction number, because it is equal to n+sod(n) for n = 1123196 and 1123205.
It is not a weakly prime, because it can be changed into another prime (1123211) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561609 + 561610.
It is an arithmetic number, because the mean of its divisors is an integer number (561610).
21123219 is an apocalyptic number.
1123219 is a deficient number, since it is larger than the sum of its proper divisors (1).
1123219 is an equidigital number, since it uses as much as digits as its factorization.
1123219 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 108, while the sum is 19.
The square root of 1123219 is about 1059.8202677813.
The cubic root of 1123219 is about 103.9492787681.
The spelling of 1123219 in words is "one million, one hundred twenty-three thousand, two hundred nineteen".