1223211323 has 4 divisors (see below), whose sum is σ = 1276394448. Its totient is φ = 1170028200.

The previous prime is 1223211313. The next prime is 1223211371. The reversal of 1223211323 is 3231123221.

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 1223211323 - 2⁴ = 1223211307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223211295 and 1223211304.

It is not an unprimeable number, because it can be changed into a prime (1223211313) 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, 26591528 + ... + 26591573.

It is an arithmetic number, because the mean of its divisors is an integer number (319098612).

Almost surely, 2^1223211323 is an apocalyptic number.

1223211323 is a deficient number, since it is larger than the sum of its proper divisors (53183125).

1223211323 is an equidigital number, since it uses as much as digits as its factorization.

1223211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53183124.

The product of its digits is 432, while the sum is 20.

The square root of 1223211323 is about 34974.4381370166. The cubic root of 1223211323 is about 1069.4664481139.

Adding to 1223211323 its reverse (3231123221), we get a palindrome (4454334544).

The spelling of 1223211323 in words is "one billion, two hundred twenty-three million, two hundred eleven thousand, three hundred twenty-three".