2132223221 has 6 divisors (see below), whose sum is σ = 2153553666. Its totient is φ = 2111102000.

The previous prime is 2132223179. The next prime is 2132223281. The reversal of 2132223221 is 1223222312.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1109822596 + 1022400625 = 33314^2 + 31975^2 .

It is not a de Polignac number, because 2132223221 - 2⁶ = 2132223157 is a prime.

It is a super-2 number, since 2×2132223221² = 9092751728343229682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2132223193 and 2132223202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2132223281) 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 5 ways as a sum of consecutive naturals, for example, 94310 + ... + 114711.

It is an arithmetic number, because the mean of its divisors is an integer number (358925611).

Almost surely, 2^2132223221 is an apocalyptic number.

It is an amenable number.

2132223221 is a deficient number, since it is larger than the sum of its proper divisors (21330445).

2132223221 is an equidigital number, since it uses as much as digits as its factorization.

2132223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209223 (or 209122 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 2132223221 is about 46176.0026528932. The cubic root of 2132223221 is about 1287.0958487165.

Adding to 2132223221 its reverse (1223222312), we get a palindrome (3355445533).

Subtracting from 2132223221 its reverse (1223222312), we obtain a palindrome (909000909).

The spelling of 2132223221 in words is "two billion, one hundred thirty-two million, two hundred twenty-three thousand, two hundred twenty-one".