1044131221 has 4 divisors (see below), whose sum is σ = 1193292832. Its totient is φ = 894969612.

The previous prime is 1044131197. The next prime is 1044131239. The reversal of 1044131221 is 1221314401.

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 1044131221 - 2⁵ = 1044131189 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 (1044131521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74580795 + ... + 74580808.

It is an arithmetic number, because the mean of its divisors is an integer number (298323208).

Almost surely, 2^1044131221 is an apocalyptic number.

It is an amenable number.

1044131221 is a deficient number, since it is larger than the sum of its proper divisors (149161611).

1044131221 is an equidigital number, since it uses as much as digits as its factorization.

1044131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149161610.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1044131221 is about 32313.0193730020. The cubic root of 1044131221 is about 1014.4991651764.

Adding to 1044131221 its reverse (1221314401), we get a palindrome (2265445622).

The spelling of 1044131221 in words is "one billion, forty-four million, one hundred thirty-one thousand, two hundred twenty-one".