2133220221 has 12 divisors (see below), whose sum is σ = 3361438080. Its totient is φ = 1292860680.

The previous prime is 2133220189. The next prime is 2133220241. The reversal of 2133220221 is 1220223312.

It is not a de Polignac number, because 2133220221 - 2⁵ = 2133220189 is a prime.

It is a super-2 number, since 2×2133220221² = 9101257022566577682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2133220194 and 2133220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133220241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10773741 + ... + 10773938.

It is an arithmetic number, because the mean of its divisors is an integer number (280119840).

Almost surely, 2^2133220221 is an apocalyptic number.

It is an amenable number.

2133220221 is a deficient number, since it is larger than the sum of its proper divisors (1228217859).

2133220221 is a wasteful number, since it uses less digits than its factorization.

2133220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21547696 (or 21547693 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2133220221 is about 46186.7970420119. The cubic root of 2133220221 is about 1287.2964272477.

Adding to 2133220221 its reverse (1220223312), we get a palindrome (3353443533).

The spelling of 2133220221 in words is "two billion, one hundred thirty-three million, two hundred twenty thousand, two hundred twenty-one".