1101223 has 4 divisors (see below), whose sum is σ = 1103368. Its totient is φ = 1099080.

The previous prime is 1101211. The next prime is 1101229. The reversal of 1101223 is 3221011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221011 = 571 ⋅5641.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101223 is a prime.

It is a super-3 number, since 3×1101223³ = 4006333283204929701, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101229) 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 in 3 ways as a sum of consecutive naturals, for example, 208 + ... + 1498.

It is an arithmetic number, because the mean of its divisors is an integer number (275842).

2^1101223 is an apocalyptic number.

1101223 is a deficient number, since it is larger than the sum of its proper divisors (2145).

1101223 is an equidigital number, since it uses as much as digits as its factorization.

1101223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1101223 is about 1049.3917285742. The cubic root of 1101223 is about 103.2662543028.

Adding to 1101223 its reverse (3221011), we get a palindrome (4322234).

The spelling of 1101223 in words is "one million, one hundred one thousand, two hundred twenty-three".