120111011 has 4 divisors (see below), whose sum is σ = 124252800. Its totient is φ = 115969224.

The previous prime is 120111007. The next prime is 120111029. The reversal of 120111011 is 110111021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120111011 - 2² = 120111007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120111011.

It is not an unprimeable number, because it can be changed into a prime (120111071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2070851 + ... + 2070908.

It is an arithmetic number, because the mean of its divisors is an integer number (31063200).

Almost surely, 2^120111011 is an apocalyptic number.

120111011 is a deficient number, since it is larger than the sum of its proper divisors (4141789).

120111011 is an equidigital number, since it uses as much as digits as its factorization.

120111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141788.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 120111011 is about 10959.5169145360. The cubic root of 120111011 is about 493.3944661378.

Adding to 120111011 its reverse (110111021), we get a palindrome (230222032).

The spelling of 120111011 in words is "one hundred twenty million, one hundred eleven thousand, eleven".