12011121011211 has 16 divisors (see below), whose sum is σ = 18303126772224. Its totient is φ = 6863322901824.

The previous prime is 12011121011171. The next prime is 12011121011257. The reversal of 12011121011211 is 11211012111021.

It is not a de Polignac number, because 12011121011211 - 2⁷ = 12011121011083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011121011261) 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, 6437730 + ... + 8091143.

It is an arithmetic number, because the mean of its divisors is an integer number (1143945423264).

Almost surely, 2^{12011121011211} is an apocalyptic number.

12011121011211 is a deficient number, since it is larger than the sum of its proper divisors (6292005761013).

12011121011211 is a wasteful number, since it uses less digits than its factorization.

12011121011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14568250.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12011121011211 its reverse (11211012111021), we get a palindrome (23222133122232).

The spelling of 12011121011211 in words is "twelve trillion, eleven billion, one hundred twenty-one million, eleven thousand, two hundred eleven".