1044023221 has 4 divisors (see below), whose sum is σ = 1069487244. Its totient is φ = 1018559200.

The previous prime is 1044023213. The next prime is 1044023237. The reversal of 1044023221 is 1223204401.

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 52403121 + 991620100 = 7239^2 + 31490^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044023221 - 2³ = 1044023213 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 (1044023021) 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, 12731950 + ... + 12732031.

It is an arithmetic number, because the mean of its divisors is an integer number (267371811).

Almost surely, 2^1044023221 is an apocalyptic number.

It is an amenable number.

1044023221 is a deficient number, since it is larger than the sum of its proper divisors (25464023).

1044023221 is an equidigital number, since it uses as much as digits as its factorization.

1044023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25464022.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1044023221 is about 32311.3481767629. The cubic root of 1044023221 is about 1014.4641856369.

Adding to 1044023221 its reverse (1223204401), we get a palindrome (2267227622).

The spelling of 1044023221 in words is "one billion, forty-four million, twenty-three thousand, two hundred twenty-one".