120002011111 has 4 divisors (see below), whose sum is σ = 120002799312. Its totient is φ = 120001222912.

The previous prime is 120002011057. The next prime is 120002011123. The reversal of 120002011111 is 111110200021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 111110200021 = 821 ⋅135335201.

It is a cyclic number.

It is not a de Polignac number, because 120002011111 - 2¹³ = 120002002919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120002611111) 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, 84826 + ... + 497191.

It is an arithmetic number, because the mean of its divisors is an integer number (30000699828).

Almost surely, 2^120002011111 is an apocalyptic number.

120002011111 is a deficient number, since it is larger than the sum of its proper divisors (788201).

120002011111 is an equidigital number, since it uses as much as digits as its factorization.

120002011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788200.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 120002011111 its reverse (111110200021), we get a palindrome (231112211132).

The spelling of 120002011111 in words is "one hundred twenty billion, two million, eleven thousand, one hundred eleven".