1223213 has 4 divisors (see below), whose sum is σ = 1228128. Its totient is φ = 1218300.

The previous prime is 1223207. The next prime is 1223231. The reversal of 1223213 is 3123221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1223213 - 2⁴ = 1223197 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223203) 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, 2063 + ... + 2588.

It is an arithmetic number, because the mean of its divisors is an integer number (307032).

2^1223213 is an apocalyptic number.

It is an amenable number.

1223213 is a deficient number, since it is larger than the sum of its proper divisors (4915).

1223213 is an equidigital number, since it uses as much as digits as its factorization.

1223213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914.

The product of its digits is 72, while the sum is 14.

The square root of 1223213 is about 1105.9896021211. The cubic root of 1223213 is about 106.9466936853.

Adding to 1223213 its reverse (3123221), we get a palindrome (4346434).

The spelling of 1223213 in words is "one million, two hundred twenty-three thousand, two hundred thirteen".