2133003221 has 4 divisors (see below), whose sum is σ = 2133283500. Its totient is φ = 2132722944.

The previous prime is 2133003211. The next prime is 2133003247. The reversal of 2133003221 is 1223003312.

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 915970225 + 1217032996 = 30265^2 + 34886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133003221 - 2¹⁰ = 2133002197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2133003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133003211) 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, 128396 + ... + 144053.

It is an arithmetic number, because the mean of its divisors is an integer number (533320875).

Almost surely, 2^2133003221 is an apocalyptic number.

It is an amenable number.

2133003221 is a deficient number, since it is larger than the sum of its proper divisors (280279).

2133003221 is an equidigital number, since it uses as much as digits as its factorization.

2133003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280278.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2133003221 is about 46184.4478260810. The cubic root of 2133003221 is about 1287.2527760586.

Adding to 2133003221 its reverse (1223003312), we get a palindrome (3356006533).

Subtracting from 2133003221 its reverse (1223003312), we obtain a palindrome (909999909).

The spelling of 2133003221 in words is "two billion, one hundred thirty-three million, three thousand, two hundred twenty-one".