2132322221 has 2 divisors, whose sum is σ = 2132322222. Its totient is φ = 2132322220.

The previous prime is 2132322217. The next prime is 2132322271. The reversal of 2132322221 is 1222232312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1112222500 + 1020099721 = 33350^2 + 31939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132322221 - 2² = 2132322217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2132322193 and 2132322202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2132322271) 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 as a sum of consecutive naturals, namely, 1066161110 + 1066161111.

It is an arithmetic number, because the mean of its divisors is an integer number (1066161111).

Almost surely, 2^2132322221 is an apocalyptic number.

It is an amenable number.

2132322221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132322221 is an equidigital number, since it uses as much as digits as its factorization.

2132322221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2132322221 is about 46177.0746258357. The cubic root of 2132322221 is about 1287.1157685379.

Adding to 2132322221 its reverse (1222232312), we get a palindrome (3354554533).

The spelling of 2132322221 in words is "two billion, one hundred thirty-two million, three hundred twenty-two thousand, two hundred twenty-one".