320012021999 has 2 divisors, whose sum is σ = 320012022000. Its totient is φ = 320012021998.

The previous prime is 320012021971. The next prime is 320012022023. The reversal of 320012021999 is 999120210023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320012021999 - 2⁸ = 320012021743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320012021929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160006010999 + 160006011000.

It is an arithmetic number, because the mean of its divisors is an integer number (160006011000).

Almost surely, 2^320012021999 is an apocalyptic number.

320012021999 is a deficient number, since it is larger than the sum of its proper divisors (1).

320012021999 is an equidigital number, since it uses as much as digits as its factorization.

320012021999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 320012021999 in words is "three hundred twenty billion, twelve million, twenty-one thousand, nine hundred ninety-nine".