1002303221 has 8 divisors (see below), whose sum is σ = 1064309400. Its totient is φ = 940635648.

The previous prime is 1002303217. The next prime is 1002303227. The reversal of 1002303221 is 1223032001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 749938225 + 252364996 = 27385^2 + 15886^2 .

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 1002303221 - 2² = 1002303217 is a prime.

It is a super-2 number, since 2×1002303221² = 2009223493653949682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002303196 and 1002303205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002303227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78536 + ... + 90401.

It is an arithmetic number, because the mean of its divisors is an integer number (133038675).

Almost surely, 2^1002303221 is an apocalyptic number.

It is an amenable number.

1002303221 is a deficient number, since it is larger than the sum of its proper divisors (62006179).

1002303221 is a wasteful number, since it uses less digits than its factorization.

1002303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169303.

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

The square root of 1002303221 is about 31659.1727782013. The cubic root of 1002303221 is about 1000.7671516612.

Adding to 1002303221 its reverse (1223032001), we get a palindrome (2225335222).

The spelling of 1002303221 in words is "one billion, two million, three hundred three thousand, two hundred twenty-one".