121020111100289 has 2 divisors, whose sum is σ = 121020111100290. Its totient is φ = 121020111100288.

The previous prime is 121020111100219. The next prime is 121020111100321. The reversal of 121020111100289 is 982001111020121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108295138185025 + 12724972915264 = 10406495^2 + 3567208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121020111100289 is a prime.

It is a super-3 number, since 3×121020111100289³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (121020111100219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510055550144 + 60510055550145.

It is an arithmetic number, because the mean of its divisors is an integer number (60510055550145).

Almost surely, 2^{121020111100289} is an apocalyptic number.

It is an amenable number.

121020111100289 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020111100289 is an equidigital number, since it uses as much as digits as its factorization.

121020111100289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 29.

The spelling of 121020111100289 in words is "one hundred twenty-one trillion, twenty billion, one hundred eleven million, one hundred thousand, two hundred eighty-nine".