32222210221 has 2 divisors, whose sum is σ = 32222210222. Its totient is φ = 32222210220.

The previous prime is 32222210191. The next prime is 32222210231. The reversal of 32222210221 is 12201222223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16132556196 + 16089654025 = 127014^2 + 126845^2 .

It is a cyclic number.

It is not a de Polignac number, because 32222210221 - 2¹³ = 32222202029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32222210231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16111105110 + 16111105111.

It is an arithmetic number, because the mean of its divisors is an integer number (16111105111).

Almost surely, 2^32222210221 is an apocalyptic number.

It is an amenable number.

32222210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

32222210221 is an equidigital number, since it uses as much as digits as its factorization.

32222210221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 32222210221 its reverse (12201222223), we get a palindrome (44423432444).

The spelling of 32222210221 in words is "thirty-two billion, two hundred twenty-two million, two hundred ten thousand, two hundred twenty-one".