1043222021 has 2 divisors, whose sum is σ = 1043222022. Its totient is φ = 1043222020.

The previous prime is 1043221997. The next prime is 1043222023. The reversal of 1043222021 is 1202223401.

1043222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 733813921 + 309408100 = 27089^2 + 17590^2 .

It is an emirp because it is prime and its reverse (1202223401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1043222021 is a prime.

It is a Sophie Germain prime.

Together with 1043222023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043222023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521611010 + 521611011.

It is an arithmetic number, because the mean of its divisors is an integer number (521611011).

Almost surely, 2^1043222021 is an apocalyptic number.

It is an amenable number.

1043222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043222021 is an equidigital number, since it uses as much as digits as its factorization.

1043222021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1043222021 is about 32298.9476763563. The cubic root of 1043222021 is about 1014.2046139168.

Adding to 1043222021 its reverse (1202223401), we get a palindrome (2245445422).

The spelling of 1043222021 in words is "one billion, forty-three million, two hundred twenty-two thousand, twenty-one".