120020201971 has 2 divisors, whose sum is σ = 120020201972. Its totient is φ = 120020201970.

The previous prime is 120020201947. The next prime is 120020202077. The reversal of 120020201971 is 179102020021.

It is a weak prime.

It is an emirp because it is prime and its reverse (179102020021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120020201971 - 2¹⁷ = 120020070899 is a prime.

It is not a weakly prime, because it can be changed into another prime (120020201911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010100985 + 60010100986.

It is an arithmetic number, because the mean of its divisors is an integer number (60010100986).

Almost surely, 2^120020201971 is an apocalyptic number.

120020201971 is a deficient number, since it is larger than the sum of its proper divisors (1).

120020201971 is an equidigital number, since it uses as much as digits as its factorization.

120020201971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 120020201971 its reverse (179102020021), we get a palindrome (299122221992).

The spelling of 120020201971 in words is "one hundred twenty billion, twenty million, two hundred one thousand, nine hundred seventy-one".