30022212221 has 2 divisors, whose sum is σ = 30022212222. Its totient is φ = 30022212220.

The previous prime is 30022212197. The next prime is 30022212251. The reversal of 30022212221 is 12221222003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18425076121 + 11597136100 = 135739^2 + 107690^2 .

It is a cyclic number.

It is not a de Polignac number, because 30022212221 - 2³⁴ = 12842343037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30022212221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30022212251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15011106110 + 15011106111.

It is an arithmetic number, because the mean of its divisors is an integer number (15011106111).

Almost surely, 2^30022212221 is an apocalyptic number.

It is an amenable number.

30022212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30022212221 is an equidigital number, since it uses as much as digits as its factorization.

30022212221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 30022212221 its reverse (12221222003), we get a palindrome (42243434224).

The spelling of 30022212221 in words is "thirty billion, twenty-two million, two hundred twelve thousand, two hundred twenty-one".