1223044421 has 4 divisors (see below), whose sum is σ = 1287415200. Its totient is φ = 1158673644.

The previous prime is 1223044363. The next prime is 1223044423. The reversal of 1223044421 is 1244403221.

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 1223044421 - 2⁶ = 1223044357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223044423) 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, 32185361 + ... + 32185398.

It is an arithmetic number, because the mean of its divisors is an integer number (321853800).

Almost surely, 2^1223044421 is an apocalyptic number.

It is an amenable number.

1223044421 is a deficient number, since it is larger than the sum of its proper divisors (64370779).

1223044421 is an equidigital number, since it uses as much as digits as its factorization.

1223044421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64370778.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1223044421 is about 34972.0519987032. The cubic root of 1223044421 is about 1069.4178045136.

Adding to 1223044421 its reverse (1244403221), we get a palindrome (2467447642).

The spelling of 1223044421 in words is "one billion, two hundred twenty-three million, forty-four thousand, four hundred twenty-one".