112011999 has 12 divisors (see below), whose sum is σ = 164161368. Its totient is φ = 67885840.

The previous prime is 112011979. The next prime is 112012009. The reversal of 112011999 is 999110211.

It is not a de Polignac number, because 112011999 - 2¹³ = 112003807 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112011919) 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 11 ways as a sum of consecutive naturals, for example, 153924 + ... + 154649.

It is an arithmetic number, because the mean of its divisors is an integer number (13680114).

Almost surely, 2^112011999 is an apocalyptic number.

112011999 is a deficient number, since it is larger than the sum of its proper divisors (52149369).

112011999 is a wasteful number, since it uses less digits than its factorization.

112011999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308598 (or 308587 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 33.

The square root of 112011999 is about 10583.5721285396. The cubic root of 112011999 is about 482.0456660876.

The spelling of 112011999 in words is "one hundred twelve million, eleven thousand, nine hundred ninety-nine".