111110121212099 has 2 divisors, whose sum is σ = 111110121212100. Its totient is φ = 111110121212098.

The previous prime is 111110121212081. The next prime is 111110121212179. The reversal of 111110121212099 is 990212121011111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111110121212099 - 2¹² = 111110121208003 is a prime.

It is a super-3 number, since 3×111110121212099³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (111110121212009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555060606049 + 55555060606050.

It is an arithmetic number, because the mean of its divisors is an integer number (55555060606050).

Almost surely, 2^{111110121212099} is an apocalyptic number.

111110121212099 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110121212099 is an equidigital number, since it uses as much as digits as its factorization.

111110121212099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 32.

The spelling of 111110121212099 in words is "one hundred eleven trillion, one hundred ten billion, one hundred twenty-one million, two hundred twelve thousand, ninety-nine".