121003109993 has 2 divisors, whose sum is σ = 121003109994. Its totient is φ = 121003109992.

The previous prime is 121003109947. The next prime is 121003110013. The reversal of 121003109993 is 399901300121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97873871104 + 23129238889 = 312848^2 + 152083^2 .

It is a cyclic number.

It is not a de Polignac number, because 121003109993 - 2¹⁴ = 121003093609 is a prime.

It is not a weakly prime, because it can be changed into another prime (121003109933) 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, 60501554996 + 60501554997.

It is an arithmetic number, because the mean of its divisors is an integer number (60501554997).

Almost surely, 2^121003109993 is an apocalyptic number.

It is an amenable number.

121003109993 is a deficient number, since it is larger than the sum of its proper divisors (1).

121003109993 is an equidigital number, since it uses as much as digits as its factorization.

121003109993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 38.

The spelling of 121003109993 in words is "one hundred twenty-one billion, three million, one hundred nine thousand, nine hundred ninety-three".