12011100111211 has 4 divisors (see below), whose sum is σ = 12014082757432. Its totient is φ = 12008117464992.

The previous prime is 12011100111167. The next prime is 12011100111223. The reversal of 12011100111211 is 11211100111021.

12011100111211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12011100111211 - 2²³ = 12011091722603 is a prime.

It is a super-3 number, since 3×12011100111211³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011100111191 and 12011100111200.

It is not an unprimeable number, because it can be changed into a prime (12011100111281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491317070 + ... + 1491325123.

It is an arithmetic number, because the mean of its divisors is an integer number (3003520689358).

Almost surely, 2^{12011100111211} is an apocalyptic number.

12011100111211 is a deficient number, since it is larger than the sum of its proper divisors (2982646221).

12011100111211 is an equidigital number, since it uses as much as digits as its factorization.

12011100111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982646220.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 12011100111211 its reverse (11211100111021), we get a palindrome (23222200222232).

The spelling of 12011100111211 in words is "twelve trillion, eleven billion, one hundred million, one hundred eleven thousand, two hundred eleven".