422132122340221 has 2 divisors, whose sum is σ = 422132122340222. Its totient is φ = 422132122340220.

The previous prime is 422132122340179. The next prime is 422132122340231. The reversal of 422132122340221 is 122043221231224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357335885088900 + 64796237251321 = 18903330^2 + 8049611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422132122340221 is a prime.

It is a super-2 number, since 2×422132122340221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422132122340231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211066061170110 + 211066061170111.

It is an arithmetic number, because the mean of its divisors is an integer number (211066061170111).

Almost surely, 2^{422132122340221} is an apocalyptic number.

It is an amenable number.

422132122340221 is a deficient number, since it is larger than the sum of its proper divisors (1).

422132122340221 is an equidigital number, since it uses as much as digits as its factorization.

422132122340221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 422132122340221 its reverse (122043221231224), we get a palindrome (544175343571445).

The spelling of 422132122340221 in words is "four hundred twenty-two trillion, one hundred thirty-two billion, one hundred twenty-two million, three hundred forty thousand, two hundred twenty-one".