120656121 has 8 divisors (see below), whose sum is σ = 163601760. Its totient is φ = 79073952.

The previous prime is 120656111. The next prime is 120656131. The reversal of 120656121 is 121656021.

It is an interprime number because it is at equal distance from previous prime (120656111) and next prime (120656131).

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

It is not a de Polignac number, because 120656121 - 2⁶ = 120656057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120656091 and 120656100.

It is not an unprimeable number, because it can be changed into a prime (120656101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340660 + ... + 341013.

It is an arithmetic number, because the mean of its divisors is an integer number (20450220).

Almost surely, 2^120656121 is an apocalyptic number.

It is an amenable number.

120656121 is a deficient number, since it is larger than the sum of its proper divisors (42945639).

120656121 is an equidigital number, since it uses as much as digits as its factorization.

120656121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681735.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 120656121 is about 10984.3580149229. The cubic root of 120656121 is about 494.1397444858.

The spelling of 120656121 in words is "one hundred twenty million, six hundred fifty-six thousand, one hundred twenty-one".