2223023221 has 4 divisors (see below), whose sum is σ = 2248001100. Its totient is φ = 2198045344.

The previous prime is 2223023219. The next prime is 2223023251. The reversal of 2223023221 is 1223203222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 361532196 + 1861491025 = 19014^2 + 43145^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223023221 - 2¹ = 2223023219 is a prime.

It is a super-2 number, since 2×2223023221² = 9883664482210429682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223023251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12488806 + ... + 12488983.

It is an arithmetic number, because the mean of its divisors is an integer number (562000275).

Almost surely, 2^2223023221 is an apocalyptic number.

It is an amenable number.

2223023221 is a deficient number, since it is larger than the sum of its proper divisors (24977879).

2223023221 is an equidigital number, since it uses as much as digits as its factorization.

2223023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24977878.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2223023221 is about 47148.9471886701. The cubic root of 2223023221 is about 1305.1126517649.

Adding to 2223023221 its reverse (1223203222), we get a palindrome (3446226443).

It can be divided in two parts, 22230 and 23221, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 2223023221 in words is "two billion, two hundred twenty-three million, twenty-three thousand, two hundred twenty-one".