120112011 has 16 divisors (see below), whose sum is σ = 183685120. Its totient is φ = 77491080.

The previous prime is 120112009. The next prime is 120112019. The reversal of 120112011 is 110211021.

It is a happy number.

It is not a de Polignac number, because 120112011 - 2¹ = 120112009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120111984 and 120112002.

It is not an unprimeable number, because it can be changed into a prime (120112019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70915 + ... + 72588.

It is an arithmetic number, because the mean of its divisors is an integer number (11480320).

Almost surely, 2^120112011 is an apocalyptic number.

120112011 is a deficient number, since it is larger than the sum of its proper divisors (63573109).

120112011 is a wasteful number, since it uses less digits than its factorization.

120112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143543 (or 143537 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 120112011 is about 10959.5625368899. The cubic root of 120112011 is about 493.3958354075.

Adding to 120112011 its reverse (110211021), we get a palindrome (230323032).

The spelling of 120112011 in words is "one hundred twenty million, one hundred twelve thousand, eleven".