10121099993 has 2 divisors, whose sum is σ = 10121099994. Its totient is φ = 10121099992.

The previous prime is 10121099971. The next prime is 10121099999. The reversal of 10121099993 is 39999012101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9998400064 + 122699929 = 99992^2 + 11077^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121099993 - 2³⁰ = 9047358169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10121099999) 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, 5060549996 + 5060549997.

It is an arithmetic number, because the mean of its divisors is an integer number (5060549997).

Almost surely, 2^10121099993 is an apocalyptic number.

It is an amenable number.

10121099993 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121099993 is an equidigital number, since it uses as much as digits as its factorization.

10121099993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39366, while the sum is 44.

The spelling of 10121099993 in words is "ten billion, one hundred twenty-one million, ninety-nine thousand, nine hundred ninety-three".