12120211221011 has 8 divisors (see below), whose sum is σ = 12280451420160. Its totient is φ = 11960309440072.

The previous prime is 12120211220833. The next prime is 12120211221023. The reversal of 12120211221011 is 11012211202121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120211221011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120211221311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84532451 + ... + 84675708.

It is an arithmetic number, because the mean of its divisors is an integer number (1535056427520).

Almost surely, 2^{12120211221011} is an apocalyptic number.

12120211221011 is a deficient number, since it is larger than the sum of its proper divisors (160240199149).

12120211221011 is an equidigital number, since it uses as much as digits as its factorization.

12120211221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169209105.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12120211221011 its reverse (11012211202121), we get a palindrome (23132422423132).

The spelling of 12120211221011 in words is "twelve trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, eleven".