1212223 has 4 divisors (see below), whose sum is σ = 1215648. Its totient is φ = 1208800.

The previous prime is 1212221. The next prime is 1212227. The reversal of 1212223 is 3222121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212223 - 2¹ = 1212221 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111 + ... + 1912.

It is an arithmetic number, because the mean of its divisors is an integer number (303912).

2^1212223 is an apocalyptic number.

1212223 is a deficient number, since it is larger than the sum of its proper divisors (3425).

1212223 is an equidigital number, since it uses as much as digits as its factorization.

1212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424.

The product of its digits is 48, while the sum is 13.

The square root of 1212223 is about 1101.0099908720. The cubic root of 1212223 is about 106.6254408829.

Adding to 1212223 its reverse (3222121), we get a palindrome (4434344).

The spelling of 1212223 in words is "one million, two hundred twelve thousand, two hundred twenty-three".