1000220233 has 4 divisors (see below), whose sum is σ = 1016617348. Its totient is φ = 983823120.

The previous prime is 1000220209. The next prime is 1000220267. The reversal of 1000220233 is 3320220001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99740169 + 900480064 = 9987^2 + 30008^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000220233 is a prime.

It is a super-3 number, since 3×1000220233³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000220833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8198466 + ... + 8198587.

It is an arithmetic number, because the mean of its divisors is an integer number (254154337).

Almost surely, 2^1000220233 is an apocalyptic number.

It is an amenable number.

1000220233 is a deficient number, since it is larger than the sum of its proper divisors (16397115).

1000220233 is an equidigital number, since it uses as much as digits as its factorization.

1000220233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16397114.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1000220233 is about 31626.2585994613. The cubic root of 1000220233 is about 1000.0734056115.

Adding to 1000220233 its reverse (3320220001), we get a palindrome (4320440234).

The spelling of 1000220233 in words is "one billion, two hundred twenty thousand, two hundred thirty-three".