120111100111 has 4 divisors (see below), whose sum is σ = 120133172632. Its totient is φ = 120089027592.

The previous prime is 120111100091. The next prime is 120111100121. The reversal of 120111100111 is 111001111021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111001111021 = 113 ⋅982310717.

It is a cyclic number.

It is not a de Polignac number, because 120111100111 - 2⁵ = 120111100079 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 (120111100121) 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, 11028096 + ... + 11038981.

It is an arithmetic number, because the mean of its divisors is an integer number (30033293158).

Almost surely, 2^120111100111 is an apocalyptic number.

120111100111 is a deficient number, since it is larger than the sum of its proper divisors (22072521).

120111100111 is an equidigital number, since it uses as much as digits as its factorization.

120111100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22072520.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 120111100111 its reverse (111001111021), we get a palindrome (231112211132).

The spelling of 120111100111 in words is "one hundred twenty billion, one hundred eleven million, one hundred thousand, one hundred eleven".