2233332221 has 4 divisors (see below), whose sum is σ = 2233818492. Its totient is φ = 2232845952.

The previous prime is 2233332209. The next prime is 2233332259. The reversal of 2233332221 is 1222333322.

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 415588996 + 1817743225 = 20386^2 + 42635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2233332221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2233332271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236180 + ... + 245453.

It is an arithmetic number, because the mean of its divisors is an integer number (558454623).

Almost surely, 2^2233332221 is an apocalyptic number.

It is an amenable number.

2233332221 is a deficient number, since it is larger than the sum of its proper divisors (486271).

2233332221 is an equidigital number, since it uses as much as digits as its factorization.

2233332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486270.

The product of its digits is 2592, while the sum is 23.

The square root of 2233332221 is about 47258.1444938330. The cubic root of 2233332221 is about 1307.1269750060.

Adding to 2233332221 its reverse (1222333322), we get a palindrome (3455665543).

The spelling of 2233332221 in words is "two billion, two hundred thirty-three million, three hundred thirty-two thousand, two hundred twenty-one".