1109219 has 2 divisors, whose sum is σ = 1109220. Its totient is φ = 1109218.

The previous prime is 1109197. The next prime is 1109231. The reversal of 1109219 is 9129011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1109219 - 2¹⁶ = 1043683 is a prime.

It is a super-2 number, since 2×1109219² = 2460733579922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1109194 and 1109203.

It is not a weakly prime, because it can be changed into another prime (1109249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554609 + 554610.

It is an arithmetic number, because the mean of its divisors is an integer number (554610).

2^1109219 is an apocalyptic number.

1109219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109219 is an equidigital number, since it uses as much as digits as its factorization.

1109219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 1109219 is about 1053.1946638680. The cubic root of 1109219 is about 103.5155911696.

It can be divided in two parts, 11092 and 19, that added together give a palindrome (11111).

The spelling of 1109219 in words is "one million, one hundred nine thousand, two hundred nineteen".