111111012099999 has 12 divisors (see below), whose sum is σ = 164831351283976. Its totient is φ = 72072007848432.

The previous prime is 111111012099953. The next prime is 111111012100013. The reversal of 111111012099999 is 999990210111111.

It is not a de Polignac number, because 111111012099999 - 2⁸ = 111111012099743 is a prime.

It is a super-2 number, since 2×111111012099999² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111012099299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166833351169 + ... + 166833351834.

Almost surely, 2^{111111012099999} is an apocalyptic number.

111111012099999 is a deficient number, since it is larger than the sum of its proper divisors (53720339183977).

111111012099999 is a wasteful number, since it uses less digits than its factorization.

111111012099999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333666703046 (or 333666703043 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 54.

The spelling of 111111012099999 in words is "one hundred eleven trillion, one hundred eleven billion, twelve million, ninety-nine thousand, nine hundred ninety-nine".