1223415321 has 4 divisors (see below), whose sum is σ = 1631220432. Its totient is φ = 815610212.

The previous prime is 1223415299. The next prime is 1223415407. The reversal of 1223415321 is 1235143221.

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 1223415321 - 2¹¹ = 1223413273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223415291 and 1223415300.

It is not an unprimeable number, because it can be changed into a prime (1223416321) 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, 203902551 + ... + 203902556.

It is an arithmetic number, because the mean of its divisors is an integer number (407805108).

Almost surely, 2^1223415321 is an apocalyptic number.

It is an amenable number.

1223415321 is a deficient number, since it is larger than the sum of its proper divisors (407805111).

1223415321 is an equidigital number, since it uses as much as digits as its factorization.

1223415321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407805110.

The product of its digits is 1440, while the sum is 24.

The square root of 1223415321 is about 34977.3544025274. The cubic root of 1223415321 is about 1069.5258973372.

Adding to 1223415321 its reverse (1235143221), we get a palindrome (2458558542).

The spelling of 1223415321 in words is "one billion, two hundred twenty-three million, four hundred fifteen thousand, three hundred twenty-one".