12120210221971 has 2 divisors, whose sum is σ = 12120210221972. Its totient is φ = 12120210221970.

The previous prime is 12120210221963. The next prime is 12120210222013. The reversal of 12120210221971 is 17912201202121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12120210221971 - 2³ = 12120210221963 is a prime.

It is a super-2 number, since 2×12120210221971² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12120210221921) 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, 6060105110985 + 6060105110986.

It is an arithmetic number, because the mean of its divisors is an integer number (6060105110986).

Almost surely, 2^{12120210221971} is an apocalyptic number.

12120210221971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120210221971 is an equidigital number, since it uses as much as digits as its factorization.

12120210221971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 12120210221971 in words is "twelve trillion, one hundred twenty billion, two hundred ten million, two hundred twenty-one thousand, nine hundred seventy-one".