33422430221 has 2 divisors, whose sum is σ = 33422430222. Its totient is φ = 33422430220.

The previous prime is 33422430193. The next prime is 33422430259. The reversal of 33422430221 is 12203422433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25188864100 + 8233566121 = 158710^2 + 90739^2 .

It is an emirp because it is prime and its reverse (12203422433) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33422430221 - 2¹⁴ = 33422413837 is a prime.

It is a super-2 number, since 2×33422430221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33422430121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16711215110 + 16711215111.

It is an arithmetic number, because the mean of its divisors is an integer number (16711215111).

Almost surely, 2^33422430221 is an apocalyptic number.

It is an amenable number.

33422430221 is a deficient number, since it is larger than the sum of its proper divisors (1).

33422430221 is an equidigital number, since it uses as much as digits as its factorization.

33422430221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 33422430221 its reverse (12203422433), we get a palindrome (45625852654).

The spelling of 33422430221 in words is "thirty-three billion, four hundred twenty-two million, four hundred thirty thousand, two hundred twenty-one".