100111001020999 has 2 divisors, whose sum is σ = 100111001021000. Its totient is φ = 100111001020998.

The previous prime is 100111001020997. The next prime is 100111001021033. The reversal of 100111001020999 is 999020100111001.

It is an a-pointer prime, because the next prime (100111001021033) can be obtained adding 100111001020999 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100111001020999 - 2¹ = 100111001020997 is a prime.

Together with 100111001020997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100111001020997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055500510499 + 50055500510500.

It is an arithmetic number, because the mean of its divisors is an integer number (50055500510500).

Almost surely, 2^{100111001020999} is an apocalyptic number.

100111001020999 is a deficient number, since it is larger than the sum of its proper divisors (1).

100111001020999 is an equidigital number, since it uses as much as digits as its factorization.

100111001020999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 100111001020999 in words is "one hundred trillion, one hundred eleven billion, one million, twenty thousand, nine hundred ninety-nine".