30210210221 has 2 divisors, whose sum is σ = 30210210222. Its totient is φ = 30210210220.

The previous prime is 30210210211. The next prime is 30210210227. The reversal of 30210210221 is 12201201203.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28957828900 + 1252381321 = 170170^2 + 35389^2 .

It is a cyclic number.

It is not a de Polignac number, because 30210210221 - 2⁶ = 30210210157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30210210196 and 30210210205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30210210227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105105110 + 15105105111.

It is an arithmetic number, because the mean of its divisors is an integer number (15105105111).

Almost surely, 2^30210210221 is an apocalyptic number.

It is an amenable number.

30210210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30210210221 is an equidigital number, since it uses as much as digits as its factorization.

30210210221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 30210210221 its reverse (12201201203), we get a palindrome (42411411424).

The spelling of 30210210221 in words is "thirty billion, two hundred ten million, two hundred ten thousand, two hundred twenty-one".