120969808121 has 2 divisors, whose sum is σ = 120969808122. Its totient is φ = 120969808120.

The previous prime is 120969808049. The next prime is 120969808147. The reversal of 120969808121 is 121808969021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118047216400 + 2922591721 = 343580^2 + 54061^2 .

It is a cyclic number.

It is not a de Polignac number, because 120969808121 - 2¹⁰ = 120969807097 is a prime.

It is not a weakly prime, because it can be changed into another prime (120969808151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60484904060 + 60484904061.

It is an arithmetic number, because the mean of its divisors is an integer number (60484904061).

Almost surely, 2^120969808121 is an apocalyptic number.

It is an amenable number.

120969808121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120969808121 is an equidigital number, since it uses as much as digits as its factorization.

120969808121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 47.

The spelling of 120969808121 in words is "one hundred twenty billion, nine hundred sixty-nine million, eight hundred eight thousand, one hundred twenty-one".