12120011121211 has 96 divisors (see below), whose sum is σ = 15104972931840. Its totient is φ = 9668484000000.

The previous prime is 12120011121199. The next prime is 12120011121221. The reversal of 12120011121211 is 11212111002121.

12120011121211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12120011121211 - 2²³ = 12120002732603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12120011121221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8352867036 + ... + 8352868486.

It is an arithmetic number, because the mean of its divisors is an integer number (157343468040).

Almost surely, 2^{12120011121211} is an apocalyptic number.

12120011121211 is a deficient number, since it is larger than the sum of its proper divisors (2984961810629).

12120011121211 is a wasteful number, since it uses less digits than its factorization.

12120011121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2210 counting only the distinct ones).

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

Adding to 12120011121211 its reverse (11212111002121), we get a palindrome (23332122123332).

The spelling of 12120011121211 in words is "twelve trillion, one hundred twenty billion, eleven million, one hundred twenty-one thousand, two hundred eleven".