12120530261 has 8 divisors (see below), whose sum is σ = 13853889984. Its totient is φ = 10387634400.

The previous prime is 12120530243. The next prime is 12120530267. The reversal of 12120530261 is 16203502121.

12120530261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12120530261 - 2¹⁰ = 12120529237 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 (12120530267) 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 7 ways as a sum of consecutive naturals, for example, 58040 + ... + 166161.

It is an arithmetic number, because the mean of its divisors is an integer number (1731736248).

Almost surely, 2^12120530261 is an apocalyptic number.

It is an amenable number.

12120530261 is a deficient number, since it is larger than the sum of its proper divisors (1733359723).

12120530261 is an equidigital number, since it uses as much as digits as its factorization.

12120530261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231931.

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 12120530261 in words is "twelve billion, one hundred twenty million, five hundred thirty thousand, two hundred sixty-one".