120123111 has 12 divisors (see below), whose sum is σ = 169039032. Its totient is φ = 75866544.

The previous prime is 120123103. The next prime is 120123121. The reversal of 120123111 is 111321021.

It is not a de Polignac number, because 120123111 - 2³ = 120123103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120123121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54376 + ... + 56541.

It is an arithmetic number, because the mean of its divisors is an integer number (14086586).

Almost surely, 2^120123111 is an apocalyptic number.

120123111 is a deficient number, since it is larger than the sum of its proper divisors (48915921).

120123111 is a wasteful number, since it uses less digits than its factorization.

120123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110958 (or 110939 counting only the distinct ones).

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

The square root of 120123111 is about 10960.0689322650. The cubic root of 120123111 is about 493.4110337906.

Adding to 120123111 its reverse (111321021), we get a palindrome (231444132).

The spelling of 120123111 in words is "one hundred twenty million, one hundred twenty-three thousand, one hundred eleven".