320122121221009 has 2 divisors, whose sum is σ = 320122121221010. Its totient is φ = 320122121221008.

The previous prime is 320122121220911. The next prime is 320122121221031. The reversal of 320122121221009 is 900122121221023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225222805130625 + 94899316090384 = 15007425^2 + 9741628^2 .

It is a cyclic number.

It is not a de Polignac number, because 320122121221009 - 2⁹ = 320122121220497 is a prime.

It is not a weakly prime, because it can be changed into another prime (320122121221039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160061060610504 + 160061060610505.

It is an arithmetic number, because the mean of its divisors is an integer number (160061060610505).

Almost surely, 2^{320122121221009} is an apocalyptic number.

It is an amenable number.

320122121221009 is a deficient number, since it is larger than the sum of its proper divisors (1).

320122121221009 is an equidigital number, since it uses as much as digits as its factorization.

320122121221009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 320122121221009 in words is "three hundred twenty trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, nine".