111101101009999 has 2 divisors, whose sum is σ = 111101101010000. Its totient is φ = 111101101009998.

The previous prime is 111101101009907. The next prime is 111101101010027. The reversal of 111101101009999 is 999900101101111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111101101009999 - 2¹¹ = 111101101007951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111101101019999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550550504999 + 55550550505000.

It is an arithmetic number, because the mean of its divisors is an integer number (55550550505000).

Almost surely, 2^{111101101009999} is an apocalyptic number.

111101101009999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101101009999 is an equidigital number, since it uses as much as digits as its factorization.

111101101009999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 43.

The spelling of 111101101009999 in words is "one hundred eleven trillion, one hundred one billion, one hundred one million, nine thousand, nine hundred ninety-nine".