32221122221 has 2 divisors, whose sum is σ = 32221122222. Its totient is φ = 32221122220.

The previous prime is 32221122179. The next prime is 32221122239. The reversal of 32221122221 is 12222112223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23981929321 + 8239192900 = 154861^2 + 90770^2 .

It is a cyclic number.

It is not a de Polignac number, because 32221122221 - 2¹⁴ = 32221105837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32221122193 and 32221122202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32221112221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16110561110 + 16110561111.

It is an arithmetic number, because the mean of its divisors is an integer number (16110561111).

Almost surely, 2^32221122221 is an apocalyptic number.

It is an amenable number.

32221122221 is a deficient number, since it is larger than the sum of its proper divisors (1).

32221122221 is an equidigital number, since it uses as much as digits as its factorization.

32221122221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 20.

Adding to 32221122221 its reverse (12222112223), we get a palindrome (44443234444).

It can be divided in two parts, 3222112222 and 1, that added together give a palindrome (3222112223).

The spelling of 32221122221 in words is "thirty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-one".