1000221333 has 32 divisors (see below), whose sum is σ = 1456142976. Its totient is φ = 608145408.

The previous prime is 1000221329. The next prime is 1000221337. The reversal of 1000221333 is 3331220001.

It is an interprime number because it is at equal distance from previous prime (1000221329) and next prime (1000221337).

It is not a de Polignac number, because 1000221333 - 2² = 1000221329 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000221337) 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 31 ways as a sum of consecutive naturals, for example, 533085 + ... + 534957.

It is an arithmetic number, because the mean of its divisors is an integer number (45504468).

Almost surely, 2^1000221333 is an apocalyptic number.

It is an amenable number.

1000221333 is a deficient number, since it is larger than the sum of its proper divisors (455921643).

1000221333 is a wasteful number, since it uses less digits than its factorization.

1000221333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1000221333 is about 31626.2759900688. The cubic root of 1000221333 is about 1000.0737722242.

Adding to 1000221333 its reverse (3331220001), we get a palindrome (4331441334).

The spelling of 1000221333 in words is "one billion, two hundred twenty-one thousand, three hundred thirty-three".