12120221022011 has 4 divisors (see below), whose sum is σ = 12120264412152. Its totient is φ = 12120177631872.

The previous prime is 12120221021929. The next prime is 12120221022047. The reversal of 12120221022011 is 11022012202121.

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

It is a cyclic number.

It is not a de Polignac number, because 12120221022011 - 2³⁴ = 12103041152827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120221022071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21273341 + ... + 21835646.

It is an arithmetic number, because the mean of its divisors is an integer number (3030066103038).

Almost surely, 2^{12120221022011} is an apocalyptic number.

12120221022011 is a deficient number, since it is larger than the sum of its proper divisors (43390141).

12120221022011 is an equidigital number, since it uses as much as digits as its factorization.

12120221022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43390140.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12120221022011 its reverse (11022012202121), we get a palindrome (23142233224132).

The spelling of 12120221022011 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-one million, twenty-two thousand, eleven".