1023003221 has 2 divisors, whose sum is σ = 1023003222. Its totient is φ = 1023003220.

The previous prime is 1023003209. The next prime is 1023003251. The reversal of 1023003221 is 1223003201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966588100 + 56415121 = 31090^2 + 7511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023003221 - 2¹⁴ = 1022986837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023003196 and 1023003205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023003251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511501610 + 511501611.

It is an arithmetic number, because the mean of its divisors is an integer number (511501611).

Almost surely, 2^1023003221 is an apocalyptic number.

It is an amenable number.

1023003221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023003221 is an equidigital number, since it uses as much as digits as its factorization.

1023003221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1023003221 is about 31984.4215361166. The cubic root of 1023003221 is about 1007.6096861249.

Adding to 1023003221 its reverse (1223003201), we get a palindrome (2246006422).

The spelling of 1023003221 in words is "one billion, twenty-three million, three thousand, two hundred twenty-one".