12120651001 has 4 divisors (see below), whose sum is σ = 12140424292. Its totient is φ = 12100877712.

The previous prime is 12120650989. The next prime is 12120651029. The reversal of 12120651001 is 10015602121.

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 2517630976 + 9603020025 = 50176^2 + 97995^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120651001 - 2¹⁵ = 12120618233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12120651001.

It is not an unprimeable number, because it can be changed into a prime (12120654001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9885726 + ... + 9886951.

It is an arithmetic number, because the mean of its divisors is an integer number (3035106073).

Almost surely, 2^12120651001 is an apocalyptic number.

It is an amenable number.

12120651001 is a deficient number, since it is larger than the sum of its proper divisors (19773291).

12120651001 is an equidigital number, since it uses as much as digits as its factorization.

12120651001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19773290.

The product of its (nonzero) digits is 120, while the sum is 19.

The spelling of 12120651001 in words is "twelve billion, one hundred twenty million, six hundred fifty-one thousand, one".