20302321211 has 2 divisors, whose sum is σ = 20302321212. Its totient is φ = 20302321210.

The previous prime is 20302321183. The next prime is 20302321217. The reversal of 20302321211 is 11212320302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20302321211 - 2⁶ = 20302321147 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20302321211.

It is not a weakly prime, because it can be changed into another prime (20302321217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151160605 + 10151160606.

It is an arithmetic number, because the mean of its divisors is an integer number (10151160606).

Almost surely, 2^20302321211 is an apocalyptic number.

20302321211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302321211 is an equidigital number, since it uses as much as digits as its factorization.

20302321211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20302321211 its reverse (11212320302), we get a palindrome (31514641513).

Subtracting from 20302321211 its reverse (11212320302), we obtain a palindrome (9090000909).

The spelling of 20302321211 in words is "twenty billion, three hundred two million, three hundred twenty-one thousand, two hundred eleven".