1043123221 has 12 divisors (see below), whose sum is σ = 1216703532. Its totient is φ = 891692928.

The previous prime is 1043123219. The next prime is 1043123261. The reversal of 1043123221 is 1223213401.

It is a happy number.

1043123221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 699020721 + 344102500 = 26439^2 + 18550^2 .

It is not a de Polignac number, because 1043123221 - 2¹ = 1043123219 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 (1043123261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10260 + ... + 46813.

It is an arithmetic number, because the mean of its divisors is an integer number (101391961).

Almost surely, 2^1043123221 is an apocalyptic number.

It is an amenable number.

1043123221 is a deficient number, since it is larger than the sum of its proper divisors (173580311).

1043123221 is an equidigital number, since it uses as much as digits as its factorization.

1043123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57460 (or 57453 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1043123221 is about 32297.4181785480. The cubic root of 1043123221 is about 1014.1725956192.

Adding to 1043123221 its reverse (1223213401), we get a palindrome (2266336622).

The spelling of 1043123221 in words is "one billion, forty-three million, one hundred twenty-three thousand, two hundred twenty-one".