10121111099999 has 2 divisors, whose sum is σ = 10121111100000. Its totient is φ = 10121111099998.

The previous prime is 10121111099927. The next prime is 10121111100011. The reversal of 10121111099999 is 99999011112101.

10121111099999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10121111099999 - 2²⁴ = 10121094322783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10121111099999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121111093999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060555549999 + 5060555550000.

It is an arithmetic number, because the mean of its divisors is an integer number (5060555550000).

Almost surely, 2^{10121111099999} is an apocalyptic number.

10121111099999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121111099999 is an equidigital number, since it uses as much as digits as its factorization.

10121111099999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118098, while the sum is 53.

The spelling of 10121111099999 in words is "ten trillion, one hundred twenty-one billion, one hundred eleven million, ninety-nine thousand, nine hundred ninety-nine".