320133220091 has 2 divisors, whose sum is σ = 320133220092. Its totient is φ = 320133220090.

The previous prime is 320133220087. The next prime is 320133220117. The reversal of 320133220091 is 190022331023.

It is an a-pointer prime, because the next prime (320133220117) can be obtained adding 320133220091 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320133220091 - 2² = 320133220087 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 320133220091.

It is not a weakly prime, because it can be changed into another prime (320133220021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160066610045 + 160066610046.

It is an arithmetic number, because the mean of its divisors is an integer number (160066610046).

Almost surely, 2^320133220091 is an apocalyptic number.

320133220091 is a deficient number, since it is larger than the sum of its proper divisors (1).

320133220091 is an equidigital number, since it uses as much as digits as its factorization.

320133220091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 320133220091 in words is "three hundred twenty billion, one hundred thirty-three million, two hundred twenty thousand, ninety-one".