1223003221 has 4 divisors (see below), whose sum is σ = 1334185344. Its totient is φ = 1111821100.

The previous prime is 1223003207. The next prime is 1223003233.

1223003221 is nontrivially palindromic in base 10.

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 1223003221 - 2¹¹ = 1223001173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223003195 and 1223003204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223003261) 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, 55591045 + ... + 55591066.

It is an arithmetic number, because the mean of its divisors is an integer number (333546336).

Almost surely, 2^1223003221 is an apocalyptic number.

1223003221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1223003221 is a deficient number, since it is larger than the sum of its proper divisors (111182123).

1223003221 is a wasteful number, since it uses less digits than its factorization.

1223003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111182122.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1223003221 is about 34971.4629519556. The cubic root of 1223003221 is about 1069.4057960895.

It can be divided in two parts, 122300 and 3221, that added together give a palindrome (125521).

The spelling of 1223003221 in words is "one billion, two hundred twenty-three million, three thousand, two hundred twenty-one".