1002203221 has 8 divisors (see below), whose sum is σ = 1043480088. Its totient is φ = 961728000.

The previous prime is 1002203207. The next prime is 1002203281. The reversal of 1002203221 is 1223022001.

It can be written as a sum of positive squares in 4 ways, for example, as 155975121 + 846228100 = 12489^2 + 29090^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002203221 - 2⁷ = 1002203093 is a prime.

It is a super-2 number, since 2×1002203221² = 2008822592365549682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002203281) 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 7 ways as a sum of consecutive naturals, for example, 197860 + ... + 202861.

It is an arithmetic number, because the mean of its divisors is an integer number (130435011).

Almost surely, 2^1002203221 is an apocalyptic number.

It is an amenable number.

1002203221 is a deficient number, since it is larger than the sum of its proper divisors (41276867).

1002203221 is an equidigital number, since it uses as much as digits as its factorization.

1002203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400823.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1002203221 is about 31657.5934176936. The cubic root of 1002203221 is about 1000.7338683056.

Adding to 1002203221 its reverse (1223022001), we get a palindrome (2225225222).

The spelling of 1002203221 in words is "one billion, two million, two hundred three thousand, two hundred twenty-one".