120111121 has 8 divisors (see below), whose sum is σ = 129513384. Its totient is φ = 110732160.

The previous prime is 120111073. The next prime is 120111163. The reversal of 120111121 is 121111021.

It can be written as a sum of positive squares in 4 ways, for example, as 13608721 + 106502400 = 3689^2 + 10320^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120111121 - 2⁷ = 120110993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120111098 and 120111107.

It is not an unprimeable number, because it can be changed into a prime (120111191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5751 + ... + 16531.

It is an arithmetic number, because the mean of its divisors is an integer number (16189173).

Almost surely, 2^120111121 is an apocalyptic number.

It is an amenable number.

120111121 is a deficient number, since it is larger than the sum of its proper divisors (9402263).

120111121 is a wasteful number, since it uses less digits than its factorization.

120111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11651.

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

The square root of 120111121 is about 10959.5219330042. The cubic root of 120111121 is about 493.3946167579.

Adding to 120111121 its reverse (121111021), we get a palindrome (241222142).

The spelling of 120111121 in words is "one hundred twenty million, one hundred eleven thousand, one hundred twenty-one".