320121211 has 2 divisors, whose sum is σ = 320121212. Its totient is φ = 320121210.

The previous prime is 320121181. The next prime is 320121247. The reversal of 320121211 is 112121023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320121211 - 2⁷ = 320121083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320121191 and 320121200.

It is not a weakly prime, because it can be changed into another prime (320121251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160060605 + 160060606.

It is an arithmetic number, because the mean of its divisors is an integer number (160060606).

Almost surely, 2^320121211 is an apocalyptic number.

320121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

320121211 is an equidigital number, since it uses as much as digits as its factorization.

320121211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 320121211 is about 17891.9314496787. The cubic root of 320121211 is about 684.0767293915.

Adding to 320121211 its reverse (112121023), we get a palindrome (432242234).

The spelling of 320121211 in words is "three hundred twenty million, one hundred twenty-one thousand, two hundred eleven".