111099000012 has 192 divisors, whose sum is σ = 357466819584. Its totient is φ = 25917096960.

The previous prime is 111099000011. The next prime is 111099000013. The reversal of 111099000012 is 210000990111.

It is an interprime number because it is at equal distance from previous prime (111099000011) and next prime (111099000013).

It is not an unprimeable number, because it can be changed into a prime (111099000011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 319458 + ... + 569430.

It is an arithmetic number, because the mean of its divisors is an integer number (1861806352).

Almost surely, 2^111099000012 is an apocalyptic number.

111099000012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111099000012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178733409792).

111099000012 is an abundant number, since it is smaller than the sum of its proper divisors (246367819572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111099000012 is a wasteful number, since it uses less digits than its factorization.

111099000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250048 (or 250046 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 24.

Adding to 111099000012 its reverse (210000990111), we get a palindrome (321099990123).

The spelling of 111099000012 in words is "one hundred eleven billion, ninety-nine million, twelve", and thus it is an aban number.