120121109971 has 2 divisors, whose sum is σ = 120121109972. Its totient is φ = 120121109970.

The previous prime is 120121109891. The next prime is 120121109981. The reversal of 120121109971 is 179901121021.

It is a strong prime.

It is an emirp because it is prime and its reverse (179901121021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120121109971 - 2¹¹ = 120121107923 is a prime.

It is not a weakly prime, because it can be changed into another prime (120121109981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060554985 + 60060554986.

It is an arithmetic number, because the mean of its divisors is an integer number (60060554986).

Almost surely, 2^120121109971 is an apocalyptic number.

120121109971 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121109971 is an equidigital number, since it uses as much as digits as its factorization.

120121109971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 34.

The spelling of 120121109971 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred nine thousand, nine hundred seventy-one".