20308320211 has 2 divisors, whose sum is σ = 20308320212. Its totient is φ = 20308320210.

The previous prime is 20308320169. The next prime is 20308320247. The reversal of 20308320211 is 11202380302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20308320211 - 2⁷ = 20308320083 is a prime.

It is a super-2 number, since 2×20308320211² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20308320251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10154160105 + 10154160106.

It is an arithmetic number, because the mean of its divisors is an integer number (10154160106).

Almost surely, 2^20308320211 is an apocalyptic number.

20308320211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20308320211 is an equidigital number, since it uses as much as digits as its factorization.

20308320211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 20308320211 in words is "twenty billion, three hundred eight million, three hundred twenty thousand, two hundred eleven".