12120211001121 has 16 divisors (see below), whose sum is σ = 16185772075200. Its totient is φ = 8067401834688.

The previous prime is 12120211001111. The next prime is 12120211001179. The reversal of 12120211001121 is 12110011202121.

It is a happy number.

It is not a de Polignac number, because 12120211001121 - 2⁹ = 12120211000609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120211001121.

It is not an unprimeable number, because it can be changed into a prime (12120211001111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6618390 + ... + 8248848.

It is an arithmetic number, because the mean of its divisors is an integer number (1011610754700).

Almost surely, 2^{12120211001121} is an apocalyptic number.

It is an amenable number.

12120211001121 is a deficient number, since it is larger than the sum of its proper divisors (4065561074079).

12120211001121 is a wasteful number, since it uses less digits than its factorization.

12120211001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634368.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12120211001121 its reverse (12110011202121), we get a palindrome (24230222203242).

The spelling of 12120211001121 in words is "twelve trillion, one hundred twenty billion, two hundred eleven million, one thousand, one hundred twenty-one".