120671111121971 has 2 divisors, whose sum is σ = 120671111121972. Its totient is φ = 120671111121970.

The previous prime is 120671111121947. The next prime is 120671111121991. The reversal of 120671111121971 is 179121111176021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120671111121971 - 2⁶ = 120671111121907 is a prime.

It is a super-2 number, since 2×120671111121971² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (120671111121931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60335555560985 + 60335555560986.

It is an arithmetic number, because the mean of its divisors is an integer number (60335555560986).

Almost surely, 2^{120671111121971} is an apocalyptic number.

120671111121971 is a deficient number, since it is larger than the sum of its proper divisors (1).

120671111121971 is an equidigital number, since it uses as much as digits as its factorization.

120671111121971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 41.

Adding to 120671111121971 its reverse (179121111176021), we get a palindrome (299792222297992).

The spelling of 120671111121971 in words is "one hundred twenty trillion, six hundred seventy-one billion, one hundred eleven million, one hundred twenty-one thousand, nine hundred seventy-one".