120111012111 has 16 divisors (see below), whose sum is σ = 161287033824. Its totient is φ = 79505725824.

The previous prime is 120111012107. The next prime is 120111012173. The reversal of 120111012111 is 111210111021.

It is not a de Polignac number, because 120111012111 - 2² = 120111012107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111012011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240025 + ... + 545741.

It is an arithmetic number, because the mean of its divisors is an integer number (10080439614).

Almost surely, 2^120111012111 is an apocalyptic number.

120111012111 is a deficient number, since it is larger than the sum of its proper divisors (41176021713).

120111012111 is a wasteful number, since it uses less digits than its factorization.

120111012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306650.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 120111012111 its reverse (111210111021), we get a palindrome (231321123132).

The spelling of 120111012111 in words is "one hundred twenty billion, one hundred eleven million, twelve thousand, one hundred eleven".