120660121 has 4 divisors (see below), whose sum is σ = 120806500. Its totient is φ = 120513744.

The previous prime is 120660083. The next prime is 120660131. The reversal of 120660121 is 121066021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82083600 + 38576521 = 9060^2 + 6211^2 .

It is a cyclic number.

It is not a de Polignac number, because 120660121 - 2⁷ = 120659993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120660131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71946 + ... + 73603.

It is an arithmetic number, because the mean of its divisors is an integer number (30201625).

Almost surely, 2^120660121 is an apocalyptic number.

It is an amenable number.

120660121 is a deficient number, since it is larger than the sum of its proper divisors (146379).

120660121 is an equidigital number, since it uses as much as digits as its factorization.

120660121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146378.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 120660121 is about 10984.5400905090. The cubic root of 120660121 is about 494.1452050103.

The spelling of 120660121 in words is "one hundred twenty million, six hundred sixty thousand, one hundred twenty-one".